Do you mean this in a sense different from corruption? The loose enforcement of regulation is a very common goal of bribes, as famously depicted in mafia movies

Do you mean this in a sense different from corruption? The loose enforcement of regulation is a very common goal of bribes, as famously depicted in mafia movies for instance. Or do you talk of instances more like where the "good citizen" gets off with a warning despite breaking a rule that the "bad citizen" would be punished for? The latter case seems more like sociology or ethnography to me, economists tend to not think so much of people as people after all.