People are divided about this Christopher Dorner thing. Some people think that he is the bad guy in all this. Some people think that the LAPD is the villain.
This is typical of human behavior, to try and make a problem simpler than it really is and therefore to make it more complex.
Let's start with the simple analysis. Regardless of how you feel about police, Christopher Dorner killed two innocent people in cold blood and without provocation. That's classic bad guy behavior, right there. So he was a bad guy.
That, however, does not make the police the good guys. Let's consider how they reacted to this situation. They opened fire on a couple of old ladies with no provocation. They rammed some random guy's car and tried to shoot him to death after determining that he was definitely not Dorner. They tried to assassinate some other dude based on no evidence at all. Their policy was, objectively, "shoot first and ask questions later." Finally, they intentionally burned down a building with something they were pretty sure was him in it so they didn't have to do their jobs. That's classic bad guy behavior too.
So the obvious answer is this: Christopher Dorner was a bad guy. A real, honest, full-fledged nut job - if the killings didn't tell you that, his political beliefs certainly would. That said, the police in Southern California have been for many years, and still are, an occupying force rather than keepers of the peace. They too are the bad guys.
One of the many disservices the media does us, is to train us that the whole yin and yang thing is not the complete load of horse shit it is. For every darkness, there must be a light. For every villain, there must be a hero.
It's just not true, though. There just because there is a bad guy, there doesn't have to be a hero. The reality is that the world is mostly bad guys and normal guys, with just a scant few good guys struggling their way through a tide of apathy and malice.