Miguel Díaz-Canel addressed crowds in Havana the US is trying to break down Cuba’s political system.
He declared the US seeks total control over the island.
Díaz-Canel branded American policies a case of political genocide during July 26 events.
He stressed this is a danger to Cuba’s sovereignty.
Raúl Castro was absent from the largest rally.
Tensions stay high due to sanctions and US political pressure.