Crusader Rabbit was one weird cartoon.
From Wiki:
In January 1959, communist rebels led by Fidel Castro seized La Cabaña; the defending Cuban Army unit offered no resistance and surrendered. Che Guevara used the fortress as a headquarters and military prison for several months. During his five-month tenure in that post (January 2 through June 12, 1959), Guevara oversaw the revolutionary tribunals and executions of suspected war criminals, political prisoners, and former members of Buró de Represión de Actividades Comunistas, Batista's secret police, massacred or disappeared.
Che didn't mess around with waterboarding, he just shot anyone who disagreed with him.