On November 18, 1944 in Cuba, the Popular Socialist Youth was founded, as a continuation of the Cuban Revolutionary Youth, and as the youth wing of the Popular Socialist Party. Raúl Castro was a member of the group for a time, having joined in 1953.
The Popular Socialist Youth had some notable campaigns including playing a major role in the opposition to a proposal to send 2,000 Cuban troops to participate on the U.S. side in the Korean War.
In 1962, the Popular Socialist Youth merged with the Rebel Youth Association to become the Young Communist League.
Photo: Raul Castro (left) with Che Guevara in 1958. Wikipedia (CC)