I don’t know which are real and which are part of some scam ring. In my area there are rings of women with children selling candy. When they reach the last stop they regroup and discuss with each other then shill candy on the next train. I never give money but I buy food if they ask. I offered to buy a sandwich from dunkin for a man and he screamed at me about how he needed muthafuckin money!!! and ever since I don’t offer anything anymore to anyone.