Miguel Díaz-Canel spoke to crowds in Havana the US is trying to undermine Cuba’s political system.
He declared America aims for complete control through the island.
Díaz-Canel called American policies a case of political genocide during July 26 events.
He warned this is a menace to Cuba’s sovereignty.
Raúl Castro was absent from the biggest rally.
Tensions are elevated because of sanctions and American political pressure.