It sounds like the NYPD actually did the right thing, despite political correctness.
Not that folks don't believe their motives are pure but they have a track record.
Bloomy undoubtedly thought he'd be off the hook with the gun thing because, after all, in his world all his friends just hate and despise guns (except the ones their bodyguards carry).
Well, he's wrong. A little gun running here, some dope there (maybe), special parking rules for the rich, and then your surveillance of Moslem students takes on a whole different cast ~ kind of like maybe suppressing the competition!