A censor is an individual or organization that reviews and restricts content deemed inappropriate or harmful. This can include books, movies, music, and online material. Censorship often aims to protect certain values, such as morality or national security, but it can also limit freedom of expression. Censorship can occur in various forms, such as government censorship, where authorities control information, or self-censorship, where individuals choose not to express certain ideas. The debate around censorship often involves discussions about the balance between protecting society and upholding the right to free speech, as seen in cases involving First Amendment rights in the United States.