Pic of the day: Revolutionary Marxists recognize a revolutionary Marxist when they see one

Activists of Sri Lanka's Marxist political party, People's Liberation Front, with masks and dressed to imitate Sri Lankan president Mahinda Rajapaksa, left center, and US president Barack Obama, center right, participate in 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)