Activists hold a protest against impunity near the Department of National Defense building in Manila on November 23, 2012 during the third anniversary of the infamous November 23, 2009 massacre in Maguindanao province that was blamed on a powerful local clan. Human Rights Watch on November 22, 2012 urged Philippine President Benigno Aquino to do more to break up private armed groups, three years after 58 people were killed in the country's worst political massacre.