A more thorough explanation:

Definition: Roth v. United States is a 1957 Supreme Court case that established that obscenity is not protected by the First Amendment. This means that the government can regulate or even ban speech or materials that are considered obscene. The case involved a man named Roth who was convicted for mailing obscene materials. He argued that his First Amendment rights were being violated, but the Court disagreed.

Example: An example of obscenity that would not be protected by the First Amendment is child pornography. This is because it is considered harmful and offensive to society, and has no redeeming value. Another example might be a book or movie that contains extremely graphic and explicit sexual content that is intended solely to arouse the reader or viewer.

Explanation: The Court's decision in Roth v. United States means that the government can regulate or even ban materials that are considered obscene, even if they have some artistic or literary value. The Court established that obscenity is not protected by the First Amendment because it is not considered a legitimate form of expression. The examples given illustrate how the government might apply this standard in practice, by banning materials that are considered harmful or offensive to society.