The purpose of terrorism is to create terror

Therefore we should expect to see horrific events at places you'd never even think about:

Heavy Toll at Sports Event in Pakistan After Bomb Blast

The strike was all the more devastating, as the bomber did not choose the most obvious target: A meeting under way of local leaders of the new militia. Instead, he drove his double-cabin pickup truck into the middle of a nearby playing field where teams were playing volleyball.

That's why it is called terrorism.