Original sentence: Trotskyism has been criticised by both capitalists and by adherents of theoretically rival forms of Marxism and socialism, in particular those who have adhered to Stalinism or Maoism
Edited sentence: Left communists and anarchist communists claim that the October Revolution was totalitarian from the start and therefore, Trotskyism has not any real differences from Stalinism both in practice and theory.Trotskyism has been criticised by adherents of theoretically rival forms of Marxism and socialism, in particular those who have adhered to Stalinism or Maoism