This document provides details about Fidel Castro and communism in Cuba. It summarizes Castro's background growing up wealthy in Cuba, his turn to Marxism and revolutionary activities against the Cuban government. It describes Castro and Ernesto "Che" Guevara launching a guerrilla campaign against the Batista regime in 1956-1959 that ultimately led to Castro taking power. The document then outlines Castro imposing a communist dictatorship on Cuba, nationalizing businesses, suppressing opposition through public executions, and turning Cuba into an impoverished police state dependent on the Soviet Union for decades. It shares reactions from world leaders to Castro's death and perspectives of both those who praised his legacy and Cuban exiles who suffered under his oppressive regime.