One thing people are not noticing, is the reason that he mentions all those celebrities is not because he's crazy, it's because he knows he's going to die, so he is letting them know how he feels about them, since all eyes are going to be on him. It was something personal. He knows exactly what he is doing.
Our generation, and a few before us, have never seen someone go against the system like this, which is why I think it is a shock for some. We were taught, just like Christopher Dorner, just sue, and everything will be alright. He's just tired of going along to get along, only to be fukked up, and broke, while legal criminals are living good. This is a good thing, as it would cause the police system to think twice about feeling comfortable with being corrupt because you never know how things will go. This is equivalent to slave revolts that eventually made the slave owners calm down with their bullshyt.