You can see us, but you don't know us.Ultras are football fans like no others. Fiercely loyal, organised, political and violent, they are a hugely visible and controversial part of the global game, their credo and aesthetic replicated in almost every league everywhere on earth. Their global movement of extreme fandom and politics is also one of the largest youth movements in the world, yet they remain enigmatic: an anti-establishment force that is transforming both football and politics. In thi ...