You could probably build an entire law class around the question: https://en.wikipedia.org/wiki/United_States_obscenity_law https://en.wikipedia.org/wiki/United

You could probably build an entire law class around the question: https://en.wikipedia.org/wiki/United_States_obscenity_law https://en.wikipedia.org/wiki/United_States_obscenity_law > The Supreme Court has ruled that obscenity is not protected by the First Amendment, but the courts still need to determine whether material in question in each case is in fact obscene.