I agree with the comments about "what caused them to do it", but I dont agree with their method of dispute resolution. Attacking a subway station full of innocent people says nothing about their cause, or what has pissed them off.
If whoever did it is NOT al-queda and they were pissed off about something in Spain, bomb the fucking government, not the innocent people going to work. just like those chicken shit cowards in Japan a while back that attacked those people in the Subway station with gas.....WTF does that prove?
There is nothing wrong with sticking up for your cause or fighting for your people, but ask yourself what killing 200 innocent people does for your cause and how it helps you reach the 'ends'?
"I believe that banking institutions are more dangerous to our liberties than standing armies. If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around the banks will deprive the people of all property until their children wake-up homeless on the continent their fathers conquered."
-Thomas Jefferson 1802