All of the things you mentioned are indeed horrific and those problems should be pointed out and talked about as much as possible.
While some of them might be quite hard to solve, there are certainly some easy solutions that are for some reason not being implemented yet. Legalizing the plant and policemen body cameras are not that hard to do.
But defunding the military machine, now that would be a serious struggle. No wonder being a soldier and/or a patriot is practically fetishized to a level where speaking against it is almost a taboo.