I'm a pretty incorrigible scofflaw rider in NYC traffic, but I don't generally do anything truly dangerous. I don't ride the wrong way down one way streets, I don't ride through crossing traffic. I do, however, run lights quite a bit.
Okay, that said, I totally support the police cracking down on scofflaw cyclists, even me, as long as they do it uniformly and fairly. Cracking down for a week or two, now and then, does nothing. But if they could actually change the culture, that would be great.
More or less the same here. I don't run reds at any busy intersections (be they busy with vehicular or pedestrian traffic), but will occasionally slip through on others (1st ave, for example, has a few lights with traffic only coming in from the west, and often there are only a few cars, or none at all.) Ditto some of the non-through traffic lights on central park west, where there is virtually zero risk of collision.
That said, I know a guy that got a ticket for exactly that (going through a light at an intersection with no cross traffic, late at night with no pedestrians around), and it's ridiculous.
I can't stand the morons on bikes riding like lunatics and narrowly slipping through gaps in people and cars when they have a red light, and I don't mind the cops enforcing the law, but literally every other block I see an Uber driver doing something illegal, and often with cops in plain sight. They need to crack down on that stuff first, before they go after the average bike rider.