Activists of Sri Lanka's Marxist political party, People's Liberation Front carry posters of Che Guevara during a street march to celebrate international Labor Day known as May Day in Colombo, Sri Lanka, Tuesday, May 1, 2012. May Day moved beyond its roots as an international workers' holiday to a day of international protest Tuesday, with rallies throughout Asia demanding wage increases and marches planned across Europe over government-imposed austerity measures. (AP Photo/Gemunu Amarasinghe)