*It starts when a handful of police officers moved through the quiet crowd, past circles of young people sharing snacks, smoking, playing guitars and chatting. They move in to grab the young man, but his friends scrambled to prevent the arrest being made, dragging him away from the police by his legs. Batons are drawn; a scuffle breaks out, and that scuffle becomes a fight, and then suddenly hundreds of armoured riot police are swarming in, seemingly from nowhere, sweeping up the steps of the National Gallery, beating back protesters as they go. Things escalate very quickly. In the space of a minute and a half, the police find themselves surrounded on both sides by enraged young people who had gathered for a peaceful sit-in at the end of the largest workers' protest in a generation. The riot line advances on both sides, forcing protesters back into the square; police officers are bellowing and laying into the demonstrators with their shields.* http://www.newstatesman.com/blogs/laurie-penny/2011/03/trafalgar-square-poli ce-young