Some of you people are absolutely ridiculous. You don't want cops to use lethal force(Obviously that's not the ridiculous part) and yet you complain when they use their non-lethal alternatives like tazers and mace. What do you think the police actually do? They stop crimes, that's what their job is, the cop saw a crime(the fight) and stopped it by subduing the one in dominant position at his arrival. It doesn't matter if he could have stopped the fight by stepping between them, why would he risk his physical safety(I know a punch from a teenager doesn't sound serious) and getting hit trying to break up the fight when he could do this?