As I'm passing by, he GRABS the hook and tries to forcibly pull my umbrella out of my hand.
He later called the police in and tried to claim that I assaulted him, but the shop was brightly lit and there were plenty of people around, including shop assistants, who were prepared to swear to the police that I was completely blameless - so the cops arrested the guy instead for wasting their time. *shrug* I, of course, was pretty shocked by the whole thing when it happened, but was able to laugh about it afterwards... what an idiot!