Are there limitations on the right to freedom of speech?

Yes, there are limitations on the right to freedom of speech. It has never been held that the First Amendment protects all kinds of sppech. Some examples of proper limitations are: When speech creates a clear and present danger that it will create some evil which government has a right to prevent. The well-known examples here are shouting "Fire." in a crowded theater or publishing troopship movements in time of war. When speech directly results in a breach of the peace such as inciting to riot or using "fighting Words." When speech constitutes libel or slander. When speech constitutes obscenity, but within a very narrow definition of obscenity. When speech is used as a criminal instrumentality, such as telling a person "Your money or your life", or making terroristic threats. When speech is used to commit fraud. When speech is used to communicate information to commit a crime, such as when several persons engage in conversation that amounts to criminal conspiracy to commit a crime or where the conversation enables several people to commit a crime. These are illustrations of some of the limitations on speech that are allowed even under the First Amendment.