I don't agree with murder, especially him swearing to kill innocent family members, but at the same time I feel like I could partially understand his anger. LAPD is probably the most corrupt police force in the nation. People have been complaining about it for decades and nothing has come about from it.
The sad thing is that this will (or now I should say did) end with no real winner. If Dorner achieved his goal then there would have been tons of dead bodies. Many, if not most, innocent. And the LAPD winning means they go back to crooked business as usual.