The Union of Communist Youth (UCM) was a youth organization in several communist countries, primarily associated with the ideology of Marxism-Leninism. It aimed to educate and mobilize young people in support of the communist party's goals, promoting socialist values and fostering loyalty to the state. The UCM often organized activities such as political education, cultural events, and community service. In many countries, the UCM served as a training ground for future leaders within the ruling communist parties, such as the Communist Party of the Soviet Union. Members were encouraged to participate in various initiatives that aligned with the party's objectives, reinforcing the importance of youth in the broader socialist movement.