( CNN ) -- San Francisco residents who like to relax around town naked will have to keep their pants on . The city 's Board of Supervisors approved a public nudity ban Tuesday in a 6-5 vote . As soon as the measure passed , some protesters inside City Hall tore off their clothes . Authorities draped them in blue blankets and led them away . Supervisor Scott Wiener , who introduced the ordinance , disputed claims that the measure violates freedom of expression . `` We 're a city that believes in freedom , and we 've always believed in freedom and free expression , '' Wiener told CNN affilite KGO . `` But taking your pants off at Castro and Market and displaying your genitals to everyone , that 's not free expression . '' But some nudists have filed a lawsuit claiming the ban violates their First Amendment rights . `` Is the First Amendment more powerful and more important than the passions of an intolerant mob and the ambitions of one or more city supervisors ? We would contend that it is , and that 's what our case is based upon , '' the nudists ' attorney , Christina DiEdoardo , told KGO . The ban does not apply at `` permitted parades , fairs and festivals . '' Otherwise , those caught naked in public could face fines of $ 100 to $ 500 , depending on the number of prior offenses . A person who violates the ordinance three times in a year could also face one year in jail . CNN 's Melissa Gray contributed to this report .
The ban does not apply at permitted parades , fairs or festivals . KGO : Nudists file a lawsuit claiming the ban violates First Amendment rights . Score: 7 Displaying your genitals is not free expression . Fines range from up to $ 100 to $ 500 ; repeat offenders could face a year in jail .