The guy who was filming was almost directly in the line of the cop's fire. Those cops don't screw around, do they?
Cops being highly trained in firearms handling and cool under pressure is largely a myth. Here in the states anyway. I did some tactical pistol training with a 23 year veteran of the ATL PD a couple of weeks ago. To say his performance during drills was scary is an understatement.
Those Brazilian cops are no doubt more used to pulling their weapon and firing. That cop didn't hesitate, he wasted that kid. He didn't seem to be in need of a grief counselor afterwards either.
Looks like the Brazilian police have one of the highest kill rates in the world and the public largely supports them. http://online.wsj.com/article/SB10001424127887323836504578553643435119434.html
Cool. Good video. People don't understand what they're doing when they use a gun to commit violent crime. Seriously.