Paris Metro is better (but not a lot better) than NYC in this regard. The thing the two cities have is that there are millions of law abiding people who ride th

Paris Metro is better (but not a lot better) than NYC in this regard. The thing the two cities have is that there are millions of law abiding people who ride them. The crazies and criminals are like 1% of the people in the system at any given time but there are so many normal people that it's not as noticeable. You go somewhere like SF's BART though and you'll sometimes find there are more homeless than normal people on a train.