In Nicaragua, hundreds of students protested in the streets of Managua Thursday, calling on President Daniel Ortega to resign. The latest protests came as international human rights groups say more than 300 people have been killed by police and government-backed paramilitaries since anti-austerity protests erupted in April. The U.N. refugee agency says the violence has driven some 23,000 to flee to neighboring Costa Rica, where some 200 people are applying for asylum each day.