London braces for chaos as rival protests collide in Whitehall on September 13, with immigration anger and the shocking murder of U.S. activist Charlie Kirk fueling tensions. Nearly 900 arrests last week have left the city on edge, and now police are deploying 1,600 officers, barriers, and riot squads to prevent bloodshed. Right-wing leader Tommy Robinson has called for a “Unite the Kingdom” march, while anti-racism groups plan counter rallies. As Britain’s immigration crisis intensifies, is this the flashpoint that pushes the UK into its fiercest street showdown in years?