The Challenge: ETA: Check ETA

ETA is back on the ropes, but it is a dangerous injured animal that will try to blow up the financial center of Madrid. However, a terrorist action, which has nothing to do with the gang, seals its fate: the bloodiest attack in the history of Europe. On March 11, 2004, 193 people die in a series of jihadist actions that shook Madrid and shocked the world.