I should make this better but I got shit to do so be generous and make the jumps i neglected to explain
They are guilty by association, just because you don't pull the trigger doesn't mean you aren't responsible for not stopping a murder. It's just a strange way to motivate them into positive action.
I think he's lost himself, but I don't think he is entirely wrong. At this point picking one side and not explaining yourself makes you look like an idiot.
I don't think cops should be allowed to gun down criminals because criminals have the right to defend themselves. Corruption of the LAPD implies that they are guilty, hence no trial is required. They are all guilty of knowing and doing nothing, they are all guilty of being afraid and causing fear, and if they don't want to be a part of it anymore they should quit.
That being said I think it's impossible to end the corruption because it is part of the city, not to mention the country.