ELN guerrillas

AP via Miami Herald

This month a guerrilla car bomb killed 21 people at a police academy in Bogotá, Colombia. It evoked horror – and also confusion, because a lot of people assume Colombia recently ended its long civil war. Colombia did sign a peace deal with one guerrilla group, the FARC. But the other – the ELN, or National Liberation Army – is still active, and it's claimed responsibility for the January 17 bombing.