Guatemala’s armed conflict was one of the longest and bloodiest in modern Latin American history. It spanned decades of organizing by peasant, indigenous, student, religious, and workers’ organizations, along with several armed revolutionary groups—motivated by anti-imperialism, land reform, equality, and social democracy—that were all violently opposed by a fascistic military dictatorship backed by national elites and the US government. Its nadir was a brutal scorched-earth campaign in 1981–1983, during which the army killed tens of thousands, displaced over a million, and committed hundreds of massacres in order to divide guerrilla organizations from their civilian base in the indigenous western highlands....