With the amount of violence our governments get us involved with, you can make a case that terrorism is really just grassroots politics. The same people in charge of a pro-market government would be applauded by most of the world.
I know it's politically incorrect to equate government-sanctioned violence with terrorism outside vegie coop sorts of circles. But I really do think that sometimes it's that simple. It's not that terrorism is necessarily acceptable or justifiable, but that government-sanctioned violence is so unbelievably bollocks. Whether or not terrorism is acceptable or justifiable is a whole other, much uglier conversation.