The employee calls police to do a welfare check. The police comes and says the guy is trespassing. They try to record his information for trespassing. Cops finds schizophrenic guy to be resisting too much and beat the shit out of him, he later dies after being sent to the hospital.

Sure, I’ll find you an article that says the same thing.

https://ktla.com/news/local-news/man-dies-in-custody-after-locking-himself-in-mcdonalds-bathroom-in-riverside/

Under investigation for who is at fault, maybe the severe head trauma was caused be a piano that was dropped down, who knows?