Terrorists.

Cowards. Real men(not cowards) join the military. Terrorism is nothing new and never will be. Governments will resort to extreme measures to combat extremists, as sometimes the only resort to doing so. This is why the USA is blamed for being the initial reason behind terrorism, when jihadists who'se way of fighting their "holy war" is killing innocent civilians and making threats (much like street criminals, only terrorists are an organization) and escaping to secrecy amidst the confusion. What's more, terrorism is not just a view freaks. It's support is massive and in the underground. If we hadn't initiated the war on terror after 9/11 and gone on what do you think would happen? Extremists who vow to "destroy the western world" could have found something even more cataclysmic to cause, worse than 9/11. Terrorists wait until the coast is clear so they can cause even more shit. True, the USA hasn't done to well to fight the GWOT, America has some "refinement" to do, honing of it's skills. OH and sympathizers? Wherever terrorists are, they practically hold that area hostage.