Freedom of speech: You might write about whether schools should have the right to limit what is discussed or covered in a student newspaper or a student news broadcast. (There is a Supreme Court ruling stating that school officials cannot censor student expression unless there is reasonable proof that such expression can disrupt school activities.)
Freedom of the press: You might write about conflicts that arise when journalists try to photograph or videotape police in action. You might also consider whether cameras should be allowed in a courtroom.
Banned books: Certain books are banned in schools. You might want to write about whether or not this is a good policy.
Speech related to violence: You might want to write about limitations on freedom of speech related to violence. Speech that incites violence is not covered by the First Amendment and can result in prosecution in the United States. However, speech that merely supports violence as a political option is not considered a crime.