An angry crowd set fire to a United Nations building as well as a local mayor’s office in the Democratic Republic of the Congo on Monday, in the wake of a deadly attack by an armed group. Violent protests erupted in the northeastern city of Beni after at least 8 people were killed and others were kidnapped on Sunday night during a raid by the Allied Democratic Forces, a militant group of Ugandan origin. Residents were apparently furious that government troops and U.N. peacekeepers had failed to protect them or thwart the attack, according to separate statements from the Congolese National Police and the United Nations.