"Another point of divergence between Left-Communism and Trotskyism is that Left-Communists refuse to work within trade unions, labeling them all as part of the capitalist system. They furthermore believe that all revolutionary-leftist group, whether Stalinist, Maoist, Trotskyist or Anarchist is part of "the left wing of the bourgeois political apparatus". They refuse to make necessary compromises during a period of reaction, and hold ideological purity up so high that it gets in the way of any constructive work they might do otherwise."