A
protest permit or
parade permit is permission granted by a governmental agency for a demonstration to be held in a particular venue at a particular time. Failing to obtain a permit may lead to charges of parading without a permit. The requirement of a permit is sometimes denounced as an infringement of
free speech, as permits are denied on spurious grounds or protestors are corralled into
free speech zones. Permits are sometimes denied on grounds that the protest will create a security risk. There seems to be evidence that the available venues for protests are shrinking in number; that citizens have experienced increasing difficulty in gaining unrestricted access to them; and that such venues are no longer where most people typically congregate in large numbers. In
Washington, DC, the National Park Service Police,
U.S. Capitol Police, and
Metropolitan Police of the District of Columbia have an elaborate permitting system. Many famous people such as
Martin Luther King, Jr. have been arrested for protesting without a permit.