The Right of Free Speech
In conformity with the rights that are guaranteed in the United States Constitution, the National Park Service allows people to exercise freedom of speech, and groups to assemble peacefully, on park land. However, to carry out its mission of preserving the cultural and natural resources of the parks, and to protect the rights and safety of visitors, the National Park Service does manage these activities through a permit system. Permits regulate aspects of activity such as location, dates and times, and number of participants.