I knew John Belushi was a fan of punk or, at least, a fan of FEAR but I have never seen the episode of 'Saturday Night Live' with the performance that resulted in $20,000 worth of damage (according to Wikipedia):
https://www.youtube.com/watch?v=Frud5RFtTi0"Spheeris' documentary brought the band to the attention of John Belushi, who lobbied successfully to get the band a spot as a musical guest on the 1981 Halloween episode of his former show Saturday Night Live. Belushi had originally offered Fear the soundtrack for his major motion picture Neighbors. The film's producers eventually forced Fear off the project, and Belushi got them the infamous SNL gig as compensation. The band's appearance included a group of slamdancers, among them Belushi, Ian MacKaye of Minor Threat (and later Fugazi), Tesco Vee of The Meatmen, Harley Flanagan and John Joseph of the Cro-Mags, and John Brannon of Negative Approach. The show's director originally wanted to prevent the dancers from participating, so Belushi offered to be in the episode if the dancers were allowed to stay.[2] The end result was the shortening of Fear's appearance on TV. They started their second song by saying, "It's great to be in New Jersey", drawing boos from SNL's New York live audience. Fear played "I Don't Care About You", "Beef Bologna", "New York's Alright If You Like Saxophones", and started to play "Let's Have a War" when the telecast faded into commercial. The slamdancers left ripe pumpkin remains on the set. Cameras, a piano and other property were damaged.
After their SNL appearance, which resulted in $20,000 in damage, some clubs chose not to hire the band. A New York Post article later reported the figure to be $500,000. This is believed to have originated from Ving, who told the Post that "...we caused $500,000 worth of damage, a cool half a million dollars worth of damage, 'cause we're professionals, and I counted the damage myself."[4] Ving later told a television talk show host that The New York Post contacted him the next day to confirm accounts that it was rumored that the band was responsible for $10,000 worth of damage to the set and that he had replied that no, his band were professionals and that they had caused $400,000 worth of damage, that he had counted the damage himself. He admitted to the host that he had obviously inflated the figure but to his amazement, The Post printed that as being the actual figure"