Time, Place, and Manner
The First Amendment requires that the government not discriminate against particular viewpoints. The Supreme Court has, however, upheld the idea that speech may be regulated under “Time, Place, and Manner” regulations. The burden of such regulations is still fairly high, requiring the government to show that their restrictions on speech are (1) content neutral (that the government does not outlaw content specific viewpoints), (2) narrowly tailored to serve a governmental interest (i.e., cannot be overly broad to regulate more than what is necessary to achieve government interest like, for example, public safety), and (3) ample alternative means to express ideas. At CSULB, for example, the time, place, and manner regulations are a reflection of the value of encouraging diverse ideas, community engagement on campus, and academic freedom while also preserving interests including campus safety.
Read more at Campus Rules and Regulation I