I completely disagree with this “a few bad apples” idea, because there should NOT be such “bad apples” to begin with. Police hold so much power that each and every one of them should be held to a higher standard than regular sports fans. You say there are good cops and bad cops just like there are good and bad sports fans, but those can’t be compared on any level. American police forces encourage such violent behavior with their bad, bad training. The fault is not on a few bad apple, it’s on the whole rotten system.
See my reply in this another thread about police violence: The cops who shot a homeless man have been charged with murder - #17 by Raita