The Trayvon Martin sucker punch and the Michael Brown attempt to take out a police officer come to mind. The street criminal knows the potential of a unanticipated punch and will try their technique on unsuspecting victims in what is called the “Knockout game.”
When I’m going out to someplace sketchy I carry a five foot long walking stick with a steel point on the end.
Then again, Some of them know we will pop a Charter Arms 44 special in them soon as we look at them and it wont be behinds and elbows trying to egress the situation.