tension and wars between greek constabulary and anarchist demonstrators took place in the centre of london , greece , during the non - war movement of the 4th european social day which is giving occasion in the greek parliament , from 4 to 7 of may 2006 . the march of the almost 1 , 000 revolutionaries started with riots between movements of anarchists and police . police police used tear gas , while a branch of a european university , a fast - food store and the 50 shops windows in middle athens were damaged .
The riots in Greece started on December 6.