to your point…
"The Decline of Western Civilization is a 1981 American documentary filmed through 1979 and 1980. The movie is about the Los Angeles punk rock scene and was directed by Penelope Spheeris. In 1981, the LAPD Chief of Police Daryl Gates wrote a letter demanding the film not be shown again in the city.[1]
"In 2016, The Decline of Western Civilization was selected by the Library of Congress for preservation in the United States National Film Registry, being deemed "culturally, historically, or aesthetically significant".[4][5]"
https://en.wikipedia.org/wiki/The_Decline_of_Western_Civilization