Here are a list of precedents for the case.
Freedman v. Maryland (1965): The government may require permits if it is not overly broad in granting discretion to the government official.
U.S. v. Grace (1983): The government may require a permit if it is not based on the content of the message.
Niemotko v. Maryland (1951): Restrictions on granting permits are constitutional if they are narrowly drawn reasonable and definite standards.
Cox v. New Hampshire (1941): The Constitution recognizes that the government may impose a permit requirement on those wishing to hold a march, parade, or rally.