President Daniel Ortega on Monday slammed as a “massacre” an attack on his political supporters that killed five people and left 28 more hurt. “This was a genuine massacre, one that has been condemned by the nation,” the leftist president said at a memorial for the dead at a convention center, carried on state and pro-government media. Unidentified assailants opened fire late Saturday, in Matagalpa department, on buses bringing supporters back from a party in Managua to celebrate the 35th anniversary of the 1979 revolution. The civilian Sandinista party supporters “were ambushed on a highway with rifles (by men) who fired on buses bringing some of the families that had come (to the capital area) for the event,” Ortega added. “These are expressions of rancor, of hatred.