Yeah, and people wonder why the general population is not fond of the police.
Seriously, what the fuck, was the cop on meth or something, that story makes literally 0 sense. You have no reason to perform a pit maneuver on a car driving at normal speed, much less so when there's vehicles coming in the opposite direction. You certainly have no reason to pull out a weapon on an unarmed civilian and you have no reason to do either of those things when you're pursuing a car/person because it's a kid who hasn't taken it's meds, not a fucking criminal.
I'm sorry, but I'll just summarize again - what the fuck?