Most of the time, security guards are just wannabe cops. That explains the fucking shit show seen here. Make absolutely no sense for them to have handled that situation the way they did.

The cop that hit the kid did what literally anyone would do upon having blood spit in their face. As a matter of fact, spitting blood into someone's face is a crime in and of itself. That being said, his reaction is understandable, even if not necessarily unexcusable. His partner did a good job at trying to get him out of the situation. And no, the chance of him getting in trouble for "being the only good cop there" are low. That just isn't a thing.

Source: am a cop