Collectivism is any system that places the group above the individual.
It goes by many names — socialism, communism, progressivism, social democracy, communitarianism, globalism. The labels change. The mechanism remains the same: the individual is subordinated to the collective, and the collective is controlled by those who claim to speak for it.
In every collectivist system, the same pattern emerges: a small group of leaders decides what is fair, what is equal, and what is good — and enforces those decisions on everyone else.