First he walks up and greets you politely as you are about to take your son's picture. Pulling a faux Arab headscarf from his pocket, he wraps it on your son's head and tells you how much better the picture will be with it. You smile, bewildered a bit but also a little touched by his interest. Then he takes his scarf from around his neck, wraps your head with it, and offers to take a picture of the two of you. You smile and nod. Picture taken, he then asks for 50 pounds for the scarves and photography services. Hmm. How exactly did that happen?