An appeals court has upheld a state law prohibiting threats of school violence.The 2nd District Appellate Court ruled the law does not violate free speech because the First Amendment allows restrictions on “true threats,” and such threats can be made without an underlying intent to act.Aden Khan, the defendant in the case, argued the law, a provision in the state’s disorderly conduct statute, was facially unconstitutional because it didn’t contain a sufficient mental state requirement.It …