If you live in or around the Boston area and plan on moshing or slam-dancing at an upcoming show in Beantown, think again. The city’s police department is apparently coming down hard on people who take part in the “aggressive” dance style following a Flogging Molly show on Feb. 21 at the House of Blues.

The show resulted in a license violation for the venue after 60 concertgoers engaged in “aggressive mosh pit dance,” according to Rolling Stone. The moshing was seen as a violation of safety rules, which the House of Blues indicated they’re taking seriously.

The most interesting part about this story, to me at least, is the great pull quote from the Boston Herald‘s piece on the topic:

“Dancing is a First Amendment right, but the behavior itself is a violation, especially when it becomes dangerous and a public safety hazard,” Boston police spokeswoman Officer Nicole Grant [said].

Lulz. Sorry punk, metal, ASAP Rocky, and Odd Future fans.