Justice Kennedy delivered the opinion of the Court.

     We consider in this case whether the Child Pornography Prevention Act of 1996 (CPPA), 18 U.S.C. 2251 et seq., abridges the freedom of speech. The CPPA extends the federal prohibition against child pornography to sexually explicit images that appear to depict minors but were produced without using any real children. The statute prohibits, in specific circumstances, possessing or distributing these images, which may be created by using adults who look like minors or by using computer imaging. The new technology, according to Congress, makes it possible to create realistic images of children who do not exist.

     By prohibiting child pornography that does not depict an actual child, the statute goes beyond New York v. Ferber (1982), which distinguished child pornography from other sexually explicit speech because of the States interest in protecting the children exploited by the production process. As a general rule, pornography can be banned only if obscene, but under Ferber, pornography showing minors can be proscribed whether or not the images are obscene under the definition set forth in Miller v. California (1973). Ferber recognized that [t]he Miller standard, like all general definitions of what may be banned as obscene, does not reflect the States particular and more compelling interest in prosecuting those who promote the sexual exploitation of children.

     While we have not had occasion to consider the question, we may assume that the apparent age of persons engaged in sexual conduct is relevant to whether a depiction offends community standards. Pictures of young children engaged in certain acts might be obscene where similar depictions of adults, or perhaps even older adolescents, would not. The CPPA, however, is not directed at speech that is obscene; Congress has proscribed those materials through a separate statute. Like the law in Ferber, the CPPA seeks to reach beyond obscenity, and it makes no attempt to conform to the Miller standard. For instance, the statute would reach visual depictions, such as movies, even if they have redeeming social value.

     The principal question to be resolved, then, is whether the CPPA is constitutional where it proscribes a significant universe of speech that is neither obscene under Miller nor child pornography under Ferber.

     Before 1996, Congress defined child pornography as the type of depictions at issue in Ferber, images made using actual minors. The CPPA retains that prohibition and adds three other prohibited categories of speech, of which the first, 2256(8)(B), and the third, 2256(8)(D), are at issue in this case. Section 2256(8)(B) prohibits any visual depiction, including any photograph, film, video, picture, or computer or computer-generated image or picture that is, or appears to be, of a minor engaging in sexually explicit conduct. The prohibition on any visual depiction does not depend at all on how the image is produced. The section captures a range of depictions, sometimes called virtual child pornography, which include computer-generated images, as well as images produced by more traditional means. For instance, the literal terms of the statute embrace a Renaissance painting depicting a scene from classical mythology, a picture that appears to be, of a minor engaging in sexually explicit conduct. The statute also prohibits Hollywood movies, filmed without any child actors, if a jury believes an actor appears to be a minor engaging in actual or simulated sexual intercourse.

     These images do not involve, let alone harm, any children in the production process; but Congress decided the materials threaten children in other, less direct, ways. Pedophiles might use the materials to encourage children to participate in sexual activity. [A] child who is reluctant to engage in sexual activity with an adult, or to pose for sexually explicit photographs, can sometimes be convinced by viewing depictions of other children having fun participating in such activity. Furthermore, pedophiles might whet their own sexual appetites with the pornographic images, thereby increasing the creation and distribution of child pornography and the sexual abuse and exploitation of actual children. Under these rationales, harm flows from the content of the images, not from the means of their production. In addition, Congress identified another problem created by computer-generated images: Their existence can make it harder to prosecute pornographers who do use real minors. As imaging technology improves, Congress found, it becomes more difficult to prove that a particular picture was produced using actual children. To ensure that defendants possessing child pornography using real minors cannot evade prosecution, Congress extended the ban to virtual child pornography.

     Section 2256(8)(C) prohibits a more common and lower tech means of creating virtual images, known as computer morphing. Rather than creating original images, pornographers can alter innocent pictures of real children so that the children appear to be engaged in sexual activity. Although morphed images may fall within the definition of virtual child pornography, they implicate the interests of real children and are in that sense closer to the images in Ferber. Respondents do not challenge this provision, and we do not consider it.

     Respondents do challenge 2256(8)(D). Like the text of the appears to be provision, the sweep of this provision is quite broad. Section 2256(8)(D) defines child pornography to include any sexually explicit image that was advertised, promoted, presented, described, or distributed in such a manner that conveys the impression it depicts a minor engaging in sexually explicit conduct. One Committee Report identified the provision as directed at sexually explicit images pandered as child pornography.  The statute is not so limited in its reach, however, as it punishes even those possessors who took no part in pandering. Once a work has been described as child pornography, the taint remains on the speech in the hands of subsequent possessors, making possession unlawful even though the content otherwise would not be objectionable.

     Fearing that the CPPA threatened the activities of its members, respondent Free Speech Coalition and others challenged the statute in the United States District Court for the Northern District of California. The Coalition, a California trade association for the adult-entertainment industry, alleged that its members did not use minors in their sexually explicit works, but they believed some of these materials might fall within the CPPAs expanded definition of child pornography. The other respondents are Bold Type, Inc., the publisher of a book advocating the nudist lifestyle; Jim Gingerich, a painter of nudes; and Ron Raffaelli, a photographer specializing in erotic images. Respondents alleged that the appears to be and conveys the impression provisions are overbroad and vague, chilling them from producing works protected by the First Amendment.....

     The sexual abuse of a child is a most serious crime and an act repugnant to the moral instincts of a decent people. In its legislative findings, Congress recognized that there are subcultures of persons who harbor illicit desires for children and commit criminal acts to gratify the impulses. Congress also found that surrounding the serious offenders are those who flirt with these impulses and trade pictures and written accounts of sexual activity with young children.

     Congress may pass valid laws to protect children from abuse, and it has. The prospect of crime, however, by itself does not justify laws suppressing protected speech.

     As a general principle, the First Amendment bars the government from dictating what we see or read or speak or hear. The freedom of speech has its limits; it does not embrace certain categories of speech, including defamation, incitement, obscenity, and pornography produced with real children. While these categories may be prohibited without violating the First Amendment, none of them includes the speech prohibited by the CPPA.

     As we have noted, the CPPA is much more than a supplement to the existing federal prohibition on obscenity. The CPPA, however, extends to images that appear to depict a minor engaging in sexually explicit activity without regard to the Miller requirements. The materials need not appeal to the prurient interest. Any depiction of sexually explicit activity, no matter how it is presented, is proscribed. The CPPA applies to a picture in a psychology manual, as well as a movie depicting the horrors of sexual abuse. It is not necessary, moreover, that the image be patently offensive. Pictures of what appear to be 17-year-olds engaging in sexually explicit activity do not in every case contravene community standards.

     The CPPA prohibits speech despite its serious literary, artistic, political, or scientific value. The statute proscribes the visual depiction of an idea that of teenagers engaging in sexual activitythat is a fact of modern society and has been a theme in art and literature throughout the ages. Under the CPPA, images are prohibited so long as the persons appear to be under 18 years of age. This is higher than the legal age for marriage in many States, as well as the age at which persons may consent to sexual relations.  It is, of course, undeniable that some youths engage in sexual activity before the legal age, either on their own inclination or because they are victims of sexual abuse.

     Both themes, teenage sexual activity and the sexual abuse of children,  have inspired countless literary works. William Shakespeare created the most famous pair of teenage lovers, one of whom is just 13 years of age. See Romeo and Juliet, act I, sc. 2, l. 9 (She hath not seen the change of fourteen years). In the drama, Shakespeare portrays the relationship as something splendid and innocent, but not juvenile. The work has inspired no less than 40 motion pictures, some of which suggest that the teenagers consummated their relationship. Shakespeare may not have written sexually explicit scenes for the Elizabethean audience, but were modern directors to adopt a less conventional approach, that fact alone would not compel the conclusion that the work was obscene.

     Contemporary movies pursue similar themes. Last years Academy Awards featured the movie, Traffic, which was nominated for Best Picture. The viewer sees the degradation of her addiction, which in the end leads her to a filthy room to trade sex for drugs. The year before, American Beauty won the Academy Award for Best Picture. In the course of the movie, a teenage girl engages in sexual relations with her teenage boyfriend, and another yields herself to the gratification of a middle-aged man. The film also contains a scene where, although the movie audience understands the act is not taking place, one character believes he is watching a teenage boy performing a sexual act on an older man.

     Our society, like other cultures, has empathy and enduring fascination with the lives and destinies of the young. Art and literature express the vital interest we all have in the formative years we ourselves once knew, when wounds can be so grievous, disappointment so profound, and mistaken choices so tragic, but when moral acts and self-fulfillment are still in reach. Whether or not the films we mention violate the CPPA, they explore themes within the wide sweep of the statutes prohibitions. If these films, or hundreds of others of lesser note that explore those subjects, contain a single graphic depiction of sexual activity within the statutory definition, the possessor of the film would be subject to severe punishment without inquiry into the works redeeming value. This is inconsistent with an essential First Amendment rule: The artistic merit of a work does not depend on the presence of a single explicit scene. Under Miller, the First Amendment requires that redeeming value be judged by considering the work as a whole. Where the scene is part of the narrative, the work itself does not for this reason become obscene, even though the scene in isolation might be offensive. For this reason, and the others we have noted, the CPPA cannot be read to prohibit obscenity, because it lacks the required link between its prohibitions and the affront to community standards prohibited by the definition of obscenity.

     The Government seeks to address this deficiency by arguing that speech prohibited by the CPPA is virtually indistinguishable from child pornography, which may be banned without regard to whether it depicts works of value.  Where the images are themselves the product of child sexual abuse, Ferber recognized that the State had an interest in stamping it out without regard to any judgment about its content.  The production of the work, not its content, was the target of the statute. The fact that a work contained serious literary, artistic, or other value did not excuse the harm it caused to its child participants. It was simply unrealistic to equate a community's toleration for sexually oriented materials with the permissible scope of legislation aimed at protecting children from sexual exploitation.

     Ferber upheld a prohibition on the distribution and sale of child pornography, as well as its production, because these acts were intrinsically related to the sexual abuse of children in two ways. First, as a permanent record of a child's abuse, the continued circulation itself would harm the child who had participated. Like a defamatory statement, each new publication of the speech would cause new injury to the child's reputation and emotional well-being.  Second, because the traffic in child pornography was an economic motive for its production, the State had an interest in closing the distribution network. The most expeditious if not the only practical method of law enforcement may be to dry up the market for this material by imposing severe criminal penalties on persons selling, advertising, or otherwise promoting the product.  Under either rationale, the speech had what the Court in effect held was a proximate link to the crime from which it came.

     Later, in Osborne v. Ohio (1990), the Court ruled that these same interests justified a ban on the possession of pornography produced by using children....

     In contrast to the speech in Ferber, speech that itself is the record of sexual abuse, the CPPA prohibits speech that records no crime and creates no victims by its production. Virtual child pornography is not intrinsically related to the sexual abuse of children, as were the materials in Ferber. While the Government asserts that the images can lead to actual instances of child abuse,  the causal link is contingent and indirect. The harm does not necessarily follow from the speech, but depends upon some unquantified potential for subsequent criminal acts....

     The Government says these indirect harms are sufficient because child pornography rarely can be valuable speech. This argument, however, suffers from two flaws. First, Ferber's judgment about child pornography was based upon how it was made, not on what it communicated. The second flaw in the Government's position is that Ferber did not hold that child pornography is by definition without value. On the contrary, the Court recognized some works in this category might have significant value, but relied on virtual images the very images prohibited by the CPPA as an alternative and permissible means of expression: [I]f it were necessary for literary or artistic value, a person over the statutory age who perhaps looked younger could be utilized.

     The CPPA, for reasons we have explored, is inconsistent with Miller and finds no support in Ferber.The Government seeks to justify its prohibitions in other ways. It argues that the CPPA is necessary because pedophiles may use virtual child pornography to seduce children. There are many things innocent in themselves, however, such as cartoons, video games, and candy, that might be used for immoral purposes, yet we would not expect those to be prohibited because they can be misused. The Government, of course, may punish adults who provide unsuitable materials to children, and it may enforce criminal penalties for unlawful solicitation. The precedents establish, however, that speech within the rights of adults to hear may not be silenced completely in an attempt to shield children from it....

     Here, the Government wants to keep speech from children not to protect them from its content but to protect them from those who would commit other crimes. The principle, however, remains the same: The Government cannot ban speech fit for adults simply because it may fall into the hands of children. The evil in question depends upon the actors unlawful conduct, conduct defined as criminal quite apart from any link to the speech in question. This establishes that the speech ban is not narrowly drawn. The objective is to prohibit illegal conduct, but this restriction goes well beyond that interest by restricting the speech available to law-abiding adults.

     The Government submits further that virtual child pornography whets the appetites of pedophiles and encourages them to engage in illegal conduct. This rationale cannot sustain the provision in question. The mere tendency of speech to encourage unlawful acts is not a sufficient reason for banning it. The government cannot constitutionally premise legislation on the desirability of controlling a person's private thoughts.  First Amendment freedoms are most in danger when the government seeks to control thought or to justify its laws for that impermissible end. The right to think is the beginning of freedom, and speech must be protected from the government because speech is the beginning of thought.

     To preserve these freedoms, and to protect speech for its own sake, the Court's First Amendment cases draw vital distinctions between words and deeds, between ideas and conduct.... There is here no attempt, incitement, solicitation, or conspiracy. Without a significantly stronger, more direct connection, the Government may not prohibit speech on the ground that it may encourage pedophiles to engage in illegal conduct....

     Finally, the Government says that the possibility of producing images by using computer imaging makes it very difficult for it to prosecute those who produce pornography by using real children. Experts, we are told, may have difficulty in saying whether the pictures were made by using real children or by using computer imaging. The necessary solution, the argument runs, is to prohibit both kinds of images. The argument, in essence, is that protected speech may be banned as a means to ban unprotected speech. This analysis turns the First Amendment upside down.

     The Government may not suppress lawful speech as the means to suppress unlawful speech. Protected speech does not become unprotected merely because it resembles the latter. The Constitution requires the reverse. [T]he possible harm to society in permitting some unprotected speech to go unpunished is outweighed by the possibility that protected speech of others may be muted .  The overbreadth doctrine prohibits the Government from banning unprotected speech if a substantial amount of protected speech is prohibited or chilled in the process....

     In sum, 2256(8)(B) covers materials beyond the categories recognized in Ferber and Miller, and the reasons the Government offers in support of limiting the freedom of speech have no justification in our precedents or in the law of the First Amendment. The provision abridges the freedom to engage in a substantial amount of law-ful speech. For this reason, it is overbroad and unconstitutional.....

Chief Justice Rehnquist, with whom Justice Scalia joins in part, dissenting.

     Congress has a compelling interest in ensuring the ability to enforce prohibitions of actual child pornography, and we should defer to its findings that rapidly advancing technology soon will make it all but impossible to do so.... Serious First Amendment concerns would arise were the Government ever to prosecute someone for simple distribution or possession of a film with literary or artistic value, such as Traffic or American Beauty. I write separately, however, because the Child Pornography Prevention Act of 1996 need not be construed to reach such materials....

     We normally do not strike down a statute on First Amendment grounds when a limiting instruction has been or could be placed on the challenged statute.... This case should be treated no differently.

     Other than computer generated images that are virtually indistinguishable from real children engaged in sexually explicitly conduct, the CPPA can be limited so as not to reach any material that was not already unprotected before the CPPA. The CPPAs definition of sexually explicit conduct is quite explicit in this regard. It makes clear that the statute only reaches visual depictions of: "[A]ctual or simulated sexual intercourse, including genital-genital, oral-genital, anal-genital, or oral-anal, whether between persons of the same or opposite sex; bestiality; masturbation; sadistic or masochistic abuse; or lascivious exhibition of the genitals or pubic area of any person."

      The Court suggests that this very graphic definition reaches the depiction of youthful looking adult actors engaged in suggestive sexual activity, presumably because the definition extends to simulated intercourse. Read as a whole, however, I think the definition reaches only the sort of hard core of child pornography that we found without protection in Ferber. So construed, the CPPA bans visual depictions of youthful looking adult actors engaged in actual sexual activity; mere suggestions of sexual activity, such as youthful looking adult actors squirming under a blanket, are more akin to written descriptions than visual depictions, and thus fall outside the purview of the statute....

     In sum, while potentially impermissible applications of the CPPA may exist, I doubt that they would be substantial in relation to the statutes plainly legitimate sweep....

Justice OConnor, with whom The Chief Justice and Justice Scalia join as to Part II, concurring in the judgment in part and dissenting in part.

     ....Drawing a line around, and striking just, the CPPAs ban on youthful-child pornography not only is consistent with Congress understanding of the categories of speech encompassed by 2256(8)(B), but also preserves the CPPAs prohibition of the material that Congress found most dangerous to children.

     In sum, I would strike down the CPPAs ban on material that conveys the impression that it contains actual-child pornography, but uphold the ban on pornographic depictions that appea[r] to be of minors so long as it is not applied to youthful-adult pornography.