Critics of a clothing-optional bike ride in Montana have reportedly demanded that city officials stop the “Bare As You Dare” ride.

The Billings Gazette reports that the Aug. 17 event wasn’t even on the Missoula City Council’s agenda on Monday, but most in the standing-room-only crowd opposed the ride, which organizer Nita Maddux has said is a way for people to demonstrate acceptance of their bodies.

“Our children will be scarred for life if they see anything like this,” said Valentine Simonovich.

Another resident, Leroy Lowry, said he hadn’t seen “anything so disgusting” as the approval of the measure by the city.

City Attorney Jim Nugent warned participants that they could face indecent exposure charges if an onlooker perceives lewd behavior and reports an incident. The city, however, approved a permit for the event, the newspaper reports.

Mayor John Engen, meanwhile, said it isn’t illegal to ride a bike without wearing clothes and linked the matter to freedom of speech.

“Public nudity is not necessarily indecent exposure,” Engen said in a statement. “It is not illegal, and it is not a basis for denying a permit.”