Athens Greece - Rioting broke out as tens of thousands anti-war demonstrators marched outside the 4th European Social Forum. Groups of anarchists torched at least four banks, a police car, smashed shop windows, and hurled molotov cocktails, bricks and other projectiles at police vehicles and the officers themselves. Clashes took place outside the British embassy, the War Museum, the U.S. embassy, Athens Police Headquarters and Parliament. Riot police arrested at least 30 people.