Miguel Díaz-Canel addressed crowds in Havana the US is attempting to undermine Cuba’s political system.
He declared Washington wants total control through the island.
Díaz-Canel described American policies a form of political genocide during July 26 events.
He warned this is a danger to Cuba’s right to govern.
Raúl Castro was absent from the biggest rally.
Tensions are elevated as a result of sanctions and American political pressure.