That was funny, the way they handled that whole trip. Obviously, the police were looking for the guy, they were watching his house. The usual way they handle that- and I know this from experience- is they catch you when you leave your house. You get a block away and 6 cars surround you.
Why would they be trying to catch him at his house, where he might get inside (and maybe he has a machine gun in there, who knows?)? That whole thing looked bungled- the other cops were obviously close but not close enough so the one cop tried to make the move on his own. And he got scared and killed a man. Even if they caught him in the yard, anybody inside would get rid of whatever they had inside before the cops got in.
Maybe they just wanted to kill him? Does anybody know anything about the guy?