need a legal definition
 

I was wondering if there is a legal term for this:

When some action is taken on you for a violation of some policy or law, but only you or on a very small portion of the violators, when the pool of obvious violators is very large.

For example, and this is not related at all to my situation, in a College University dorm, there are 3 rooms next to each other, all having loud parties. The resident advisors bust room 1, but ignore 2 and 3, even though they have the same obvious loud noise as the first room.

see what I mean? multiple offenders but focusing only on a small amount?

You mean like when you are just keeping up with traffic, and you get stopped for speeding, and no one else does? Not sure there is a legal term for it- -except bad luck.

I was really hoping there was a term. If there isn't, I have to figure out a way to word that succintly.

I think I'm just going to use "apparent dichotomy of enforcement"

how's that sound?

Borderline discrimination.
Discriminatory persecution.
Arbitrary judgement.

Screwed.