Miguel Díaz-Canel addressed crowds in Havana the US is attempting to undermine Cuba’s political system.
He announced the US seeks total control across Cuba.
Díaz-Canel branded American policies a type of political genocide during July 26 events.
He emphasised this is a threat to the country's sovereignty.
Raúl Castro stayed away from the biggest rally.
Tensions stay high because of sanctions and US political pressure.