Hi,
Personally, I want a much higher fraction of gun wielding, baton-toting, chokehold knowing police officers to be good people doing good things. 5-10% of the police force is a lot of bad apples, given their ability to cause mayhem. Teachers - they may not teach you, they may pick on you, but they won't kill you or beat you senseless. Probably.
As for fraternities, It is just incorrect to call fraternities wholesome things with adult oversight from local volunteers. Seriously? To solve the problem, though, instead of nail polish you could simply avoid going into fraternities or off-campus parties altogether.
Especially freshman fall.