QUOTE (ptatc @ May 3, 2013 -> 11:27 PM)
If I read it wrong then I apologize. I read that's it's ok for a police officer to yell back at someone yelling at them. If they are physically threatened then it's not only ok but justified. However, it was all being compared to an ump yelling at a player not anyone threatening physical violence.
It's definitely OK for a cop to yell back at a person in certain situations, and not just where violence is implied. There are a million different personalities in the world. Believe it or not, some people NEED to be yelled at to reach them. Of course you want to keep it low as often as possible, but that's not always an option. It's a little more complex than how you originally put it, is all I'm getting at.