Miguel Díaz-Canel addressed crowds in Havana the US is attempting to undermine Cuba’s political system.
He declared the US seeks total control over Cuba.
Díaz-Canel branded American policies a type of political genocide during July 26 events.
He warned this is a danger to the country's sovereignty.
Raúl Castro was absent from the largest rally.
Tensions remain high as a result of sanctions and American political pressure.