Bouncer Vs Boxer

The fight starts off slow but it quickly moves into “fight of the night” category. Watch as this bouncer takes on a boxer in a street fight. This can’t be proper protocol for ejecting a patron?
FB version:

Youtube:

https://www.youtube.com/watch?v=Jg_tPRiv6oU

This was fair play but the boxer got the better of him. Not like this bouncer vs drunk dude!