The wards of the state aren't expected to be independent and responsible. They're given handouts in exchanges for their votes, and over time you have a whole generation that can't take care of itself. That's when the state steps in to take care of its wards "for their own good", and it's inevitable that over-corrections will happen.
If anything, I would blame the political elitist class that uses shiny beads to buy power and then perpetuates the misery of their constituents by not giving them a good education and the means to improve their lot.
Even with all the current police injustices, the negative impact from them is less than the impact if they withdrew from the neighborhood. In that sense they are a net good. Of course people want the peace and prosperity reduced crime brings but also want less authority looking down but most of all they want economic opportunity when they know its available to other communities, its the immediate contrast which is most damning. I.e. your neighbors have it good and you don't and society tells you you can have too but for the life of you, it seems like a scam is being played on you.
This however is a long term issue. It's generational. The community has to help itself as much as it needs a helping hand from others. Community organizations which give people support, direction and even punishment. But lots of that is missing and you have disaffected people and opportunists who take these circumstances as an excuse for more violence instead of trying to build something positive.
http://www.washingtonpost.com/blogs/wonkblog/wp/2014/11/26/h...
I also don't think the fines and other ridiculous fees are used as weapons, but rather path of least resistance in generating revenue because people vote taxes down.
[1] http://www.theatlantic.com/politics/archive/2015/04/nonviole...
I think the problem is more your interpretation with what they are saying than what the words they said. Also, who are the people above the law, the rioters, the bad police, its not clear, but we know both contribute to destruction.