when i was in high school an 18 year old girl was shot in the face by police in a riot after a red sox victory in the playoffs / world series.
you dont want anything like that to ever happen (it was clearly an accident. an 18 year old girl is no threat to a cop in riot gear,) but i still prefer for cops to have guns.'
if those hooligans catch a guy from the other side they can kill him. they can either trample him to death or beat him to death. you've got to have cops with guns to prevent that.