Keep it there. You probably won't be chased. All they want is you money. This is the hardest lesson to learn because it goes against our natural instinct not to turn around to see if someone is following us. You must break that habit.
Fire brings help.
Make Eye Contact if you're in trouble. You'd be surprised how easy it is in New York to not get involved just by ignoring a situation. If you're in trouble and need help from someone standing around or walking by you, you must make eye contact with the person you desire help from or else you will be ignored. They cannot refuse to help because they've already offered their assistance by making eye contact back with you. Don't be shy to take them up on their eye contact offer to help.