What will you do when you meet a man's thievery?

If you can help catch the thief without endangering yourself, why not? It would be a good deed and good for your karma. :) Otherwise, try to note down the facial details, clothings, etc of the man or snap a picture of him if possible. This will help the police in their search.

I will call the 110 first.

I'd yell "Hey! Stop! Theif!" while trying to get a good description of him. I'm not physically able to chase him. But if I were in the right position I might step in front of his running to slow him down. If he got away I'd comfort the lady and help her to call the police. I always wonder what I would really do in that situation. Would I really be that brave? Or would I just watch it all happen and go on? I don't think I'd go on, unless there were people already helping the lady. But I'd like to think I'd have the courage to get in the theif's way.

Well most probably ill try to block the man's way or throw some stones on him. I wont let someone run away from a crime he did