That'll be because Singapore is first and foremost a police state which is somewhat easier to administrate when you only need to focus on one city. I have no interest in losing all my rights just so I can pretend that the elites aren't still snorting massive lines every other day.Yes but countries like Singapore do similar and much lower levels of all crime.
I'm pretty sure they weren't killing people for bootlegging booze or running speak easys in prohibition America.