MostlyHarmlessGive a man a fish and he'll eat for a day. Teach a man to fish and then buy the pond. Tell him he can't have the fish, but he can fish for you and you will sell the fish and give him a very small cut, and then he'll say stuff like "I am hungry and my teeth hurt". Nobody wants to fish these days.
Adrian Riskin 
But they fish anyway because the cops make sure that the potential danger in not fishing is too high to chance it.