I was once behind two Hispanic women, a youngish one with a well behaved young boy about 4 or 5, and an older one who was likely a relative. They had two shopping carts filled to the brim. She paid with a food stamp card, and when that wasn’t quite enough to cover it, she whipped out her American Express card to finish the transaction.
I found a wallet on the train once with TWO s.s. Checks in it! Concerned, I called the lady ( she had two different names other than her drivers license.) when I gave it to her, she opened it and exclaimed, wheres all the cash? No thank you, ( obviously, the pickpocket had skimmed and tossed it)