No. Simply thinking that is extremely naive. Real change takes time, pressure from the public, and initiatives from up above. Stop thinking in the patterns of a goddamn Hollywood action scriptwriter. It's incredibly offensive to see such otherwise intelligent people indulge in pure childish power fantasies and populist violence-mongering.
My thinking is naive? Hah! Nothing I wrote except the first part would be of any interest to Hollywood, and that's the problem. In real life, "initiatives from up above" just plain isn't going to happen, ever, for a great many things, and unless the pressure from the public comes in a way that threatens the power of those up above, it's going to be ignored. Hell, even managing pressure from the public is difficult without acts most people would consider extreme - the vast majority of the public has far greater concerns than righting wrongs and fixing broken systems by replacing them with slightly less broken systems. They are busy with already difficult lives and more immediate and personal problems.
Hollywood likes to pretend its not hard. Holywood likes to pretend that killing bad people is
enough. It's sometimes required, because the bad people have power and guns and will kill YOU if they think you might take that away. But as a solution, it's barely a first step. In order to dismantle a corrupt system, truly dismantle it, you need popular support. You need continued pressure. You need power.
And you need better people to replace them with, or the ability to live without that system and insure it doesn't rise again.Most coups stumble on that last point, and hard. Hollywood tends to ignore that step and all the hard bits in between. And it's not something that works often.
Violence is never more than the start of a solution, but it can be a required component to one... the one's who ultimately decide whether or not it's required are the ones opposing the solution.
(This is why Democracy was such a big deal! Suddenly, everyone agreed NOT to bring it that far, even if they were going to lose! And it works, so long as everyone plays by the rules. Sometimes, though... sometimes you get the Civil War, and "killing people" becomes a necessity because the other side won't settle for anything less)
Do I think that's the situation the LAPD is in? Probably not. But I don't think it's hard to see where someone is coming from if they were to go off the deep end and decide it was. When change from within is impossible, and passive change from without is impossible, your options are either acceptance or change by force. From the point of view of one person, with no other options, that option can be might attractive.
It won't work, of course. Like they say, "A few bad apples spoil the barrel." You can't kill your way out of a system that can create replacements as fast as you can kill them.