I took gang violence as an example, there are many other kinds of "common violence" that could happen to anyone. The US stats below are for a single year [1] [2]. For reference, cumulative casualties in the US as a result of terrorism for 2001-2014 is 3,412 [3], 416 if you exclude 9/11. Any way you look at it, terrorism is a very minor form of crime in the US and Europe.