This sort of meaningless violence sucks.
In New Zealand every year there are numerous chinese students kidnapped by the Triads in Auckland. They will wait outside bars for them to come out, and then grab them and demand ridiculous amounts of money.
One guy was fortunate enough that when his offenders took him to the bank, he wrote on the withdrawl slip 'please help me' and the police were along in minutes.
Where I lived in the middle of the city, there was a huge chinese supermarket and food court maybe 30secs from my house. The triads were in the buildings across from that, and not long before I moved in, a young chinese guy was murdered at the end of our driveway.
I helped a Japanese guy who was being robbed in broad daylight, by these young little sh*ts. It was at christmas time, and unfortunately this sort of silly behaviour happens quite often.
Another Japanese friends workmate was robbed, same week across the road from the other incident, a knife pointed at her neck. Unfortunately she was carrying everything she owned.
Hmm but no, nothing like this has happened to me before. Sure I have been robbed, but not mugged or beaten.