A member of the ruling National Freedom Front party, with his head covered with red cloth, takes part in a May Day march in Colombo May 1, 2011. Sri Lanka's ruling party held their May Day rally to garner a mass protest against a U.N.-appointed panel's report that accused the island nation of committing war crimes in the final phase of a 25-year conflict with the Tamil Tigers that ended in May 2009.

Sri Lanka's President Mahinda Rajapaksa waves as he arrives at May Day rally in Colombo May 1, 2011. Sri Lanka's government held the May Day rally to garner mass protest against UN-appointed panel's report that accused the island nation of committing war crimes in the final phase of a 25-year conflict with the Tamil Tigers ended in May 2009.

A member of the National Freedom Front party with his face covered with black cloth stands next to U.S. President Barack Obama's image during a May Day march in Colombo May 1, 2011. Sri Lanka's Government held the May Day rally to garner mass protest against UN-appointed panel's report that accused the island nation of committing war crimes in the final phase of a 25-year conflict with the Tamil Tigers ended in May 2009.

Supporters of the Sri Lanka's ruling party United People's Freedom Alliance, wear masks of UN Secretary General Ban Ki-moon, left an UN expert Marzuki Darusman during a May Day rally in Colombo, Sri Lanka, Sunday, May 1, 2011. Thousands of flag-waving Sri Lankans used a May Day rally Sunday to protest a U.N. report on alleged crimes committed during the country's civil war.The placard left,in Sinhalese reads, " Ban Ki-moon and his three member panel to people's court."

A member of the National Freedom Front party holds up a sign of Ban Ki-Moon as he marches during a May Day march in Colombo May 1, 2011. Sri Lanka's government held the May Day rally to garner mass protest against UN-appointed panel's report that accused the island nation of committing war crimes in the final phase of a 25-year conflict with the Tamil Tigers ended in May 2009.

Supporters of the Sri Lanka's ruling party United People's Freedom Alliance burn an effigy of UN Secretary General Ban Ki-moon during a May Day rally in Colombo, Sri Lanka, Sunday, May 1, 2011. Thousands of flag-waving Sri Lankans used a May Day rally Sunday to protest a U.N. report on alleged crimes committed during the country's civil war.The government earlier urged workers to use the rally to demonstrate opposition to the recently released report by a panel of U.N. experts.

Sri Lankan dancers perform in the backdrop of a huge portrait of president Mahinda Rajapaksa during a May Day rally in Colombo, Sri Lanka, Sunday, May 1, 2011. Thousands of flag-waving Sri Lankans used a May Day rally Sunday to protest a U.N. report on alleged crimes committed during the country's civil war.The government earlier urged workers to use the rally to demonstrate opposition to the recently released report by a panel of U.N. experts.

A child holds up a portrait of Sri Lanka's president Mahinda Rajapakse during a May Day rally in Colombo on May 1, 2011. The Sri Lankan government used a large May Day rally on Sunday to reject a United Nations report that alleged the military may have been guilty of atrocities during the island's civil war.

Supporters of the Sri Lanka's ruling party United People's Freedom Alliance carry portraits of presidents of Venezuela, Sri Lanka, Cuba, Libya, Russia and China during a May Day rally in Colombo, Sri Lanka, Sunday, May 1,2011. Thousands of flag-waving Sri Lankans used a May Day rally Sunday to protest a U.N. report on alleged crimes committed during the country's civil war.