Hardcore pornography

Hardcore pornography, or hardcore porn, is still photography or video footage that contains explicit forms of pornography, most commonly including depictions of sexual acts such as vaginal, anal, and/or oral intercourse, cunnilingus, fellatio, anilingus, ejaculation, and/or fetish play. Hardcore pornography usually takes the form of photographs, often displayed in magazines or on the Internet, or films and cartoons. Since the 1990s it has been distributed widely over the Internet.

A distinction between "hardcore pornography" and "borderline pornography" (or "borderline obscenity") was made in the 1950s and 1960s by American jurists discussing obscenity laws. "Borderline pornography" appealed to sexual prurience, but had positive qualities, such as literary or artistic merit, and so was arguably permitted by obscenity laws; "hardcore pornography" lacked such merits and was definitely prohibited. In Roth v. United States (1957) the government brief distinguished three classes of sexual material: "novels of apparently serious literary intent"; "borderline entertainment ... magazines, cartoons, nudist publications, etc."; and "hard core pornography, which no one would suggest had literary merit". Eberhard and Phyllis Kronhausen in 1959 distinguished "erotic realism" from "pornography"; in the latter "the main purpose is to stimulate erotic response in the reader. And that is all." Most famously, in Jacobellis v. Ohio (1964), Potter Stewart wrote:

In Jacobellis v. Ohio and other cases, the United States Supreme Court ruled that only "hardcore" pornography could be prohibited by obscenity laws, with the rest protected by the First Amendment. The category of "borderline obscenity" thus became obsolete. The 1970 report of the President's Commission on Obscenity and Pornography said:

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