Conversation so far:
When did Dinosaur Jr. form?
Mascis and Barlow played together, on drums and guitar respectively, in the hardcore punk band Deep Wound, formed in 1982 while the pair were attending high school in western Massachusetts.
What was significant about Dinosaur Jr.'s formation?
Deep Wound broke up in mid-1984. Cosloy had dropped out of the University of Massachusetts Amherst to focus on running his independent record label, Homestead Records.
Why did the band Mogo change their name?
Charlie Nakajima used a performance to launch an extended anti-police tirade. Mascis was so appalled by Nakajima's behavior at the show that he disbanded the group the next day.
What did Charlie Nakajima do at at their first show on University of Massachusetts Amherst campus in the first week of September 1984?
Charlie Nakajima used a performance to launch an extended anti-police tirade.
How did the audience react to Charlie Nakajima using the performance to launch an extended anti-police tirade?
Did newly formed Dinosaur Jr. find a new band member after that?
TJ Mascis, Lou Barlow, and Murph named themselves Dinosaur. Mascis and Barlow took over lead-vocal duties.

Question: How did Nakajima react to that?
Self-contained rewrite: How did Charlie Nakajima react to TJ Mascis, Lou Barlow, and Murph forming Dinosaur?