When it comes to policing this is actually a real problem and a violent one. Watch this vicious attack that police pretend a dog did it while not doing anything but provoke more pain. Imagine for a second you were black when you saw this. Getting arrested, not resisting and being mauled by a police dog, this leaves me speechless...
https://www.youtube.com/watch?v=LbZWt7kWCCY