I practice something I learned in India on how to handle the ever-present beggars. I ignore them, I mean totally ignore them!! I turn them into air in my mind. It is the utmost rude way I can turn them off because, by that time, I want nothing to do with that person. If I am angry enough with them I also cut them completely off from me, in the Japanese style. There is something to be said for being somewhat familiar to different cultures and their ways of dealing with people.