Gun safety
I honestly believe that the cop was a good guy and was looking out for everybody. Toward the beginning, someone (I think the black guy) says something like, "Give up the bullets", but the cop says no. I think he just didn't want to give someone else the means to use it if he ever lost control of it (which we all knew would happen).
But couldn't the problem of the gun be solved simply by flushing the bullets down the toilet? I'm no arms expert or plumber, but it seems they would be light enough to flush. Or even, simply shoot all of them. I think he went through about 6 or 7 rounds anyway.
The point is, to make everyone feel safe without looking like d!ck himself, he should have just gotten rid of all the bullets. Was this so hard to think of?
Also, all four of the girls in this movie are stunning!