In a very real sense that includes the bombs used in warfare. I belong to the strange group that thinks wars should be the last resort - not the first. Consider this page an exploration in how some of the extremist groups view the world. I think it is important to see the world view of these groups to understand what motivates them. The bomber seems to think he is a patriot following a higher purpose.
Most people see no evidence of war, or even any sort of struggle.
Look at all the fringe groups doing their own thing on the web. During revolutionary times the average person was subject to the whims of a far away government. Average life was OK, farmers farmed, laborers labored, governors governed. While the colonies had a voice in the chambers of power, this voice was mostly ignored. The government developed monetary policy that was somewhat removed from the needs of the governed.