Those in power never seem to learn the most simple lesson:
Never ever screw someone to the point where they feel they have nothing left to lose.
Because when you push them to the point where they see no reason to continue living themselves, they may then see no reason to let you continue living either.
Maybe you feel that you are ever so superior to them, and your life is ever so much more valuable than theirs. Go ahead and feel that way all you want to. But if you act on your feelings and screw them over past their breaking point, you may not like the blowback. In fact, you may not survive it.
Update: Another post from Brad that bears reading:
I want you to get this through your head, and never forget it. Lynching was not a hate crime. Lynching was an economic crime.