Take a closer look deep down inside your head. Killing people who have done you wrong in the past.... This guy is living everybody's wet dream.
This is why snipers are so important on the battlefield. It's not that they kill a lot of people (Some ecxeptions). It's the fear they spread. The psychological effect. No cop in LA can do his job without looking over his shoulder, right now. They use a lot of ressources just to protect their own and their families. At some point, some officers will just stop going to work because they give their famillie's security priority to their duty.
It was about time that someone humbles the cops a little. I don't condone the deaths of the civillians, but from a guerilla point of view, he does the right thing. Hit soft targets, and run. Discourage the ennemy, stay on the move, hit as hard as you can. Keep people that are not involved out of it, so you may get some help and support at some point. Distract the guys on your tracks, by dropping bullshit clues, and cost them as much money and ressources as possible. Textbook guerilla warfare.