A police officer's "oath" doesn't mean shit. They are not contractually obligated to abide by it. It's a job just like working at McDonald's. And they can quit any time they please. Like when they do murder someone and the heats on. They just resign and move elsewhere to another department. They're called gypsy cops. The main problem is our corrupt judicial system that will not punish crooked cops. The longer it goes on the more of them make up our law enforcement. At this point it's REALLY bad. Similar to how our society has created a population of violently worthless negroes. After a while it becomes self reenforcing. All by design.