It's hard to determine a way to feel about him when we don't know what really happened with the LAPD. He says he didn't lie, they say he did and as observers we don't have access to all the facts.
However, it is never ok to kill innocent people to make a personal statement. The LAPD officers aside, that young woman and her fiance had absolutely NOTHING to do with his argument with the LAPD and in my opinion any feelings of sympathy I may have had for him went out the window with those unnecessary deaths.
Do you want to be noticed or do you want to be heard? If you really want to be heard, speak in a language that people will listen to. Murder is not a language we all speak.