I'm sorry but how have you possibly come to the conclusion that stalin executed spanish anarchists is "historical fact"????

And Mao did literally nothing to anarchists. In fact they were allied. The fascists destroyed the KPAM through assassinating their leadership. Mao's entire structure was heavily influenced by anarchist organising in part through organisational necessity and in part because he disagreed with european MLs that the rural peasantry couldn't be the leading force in revolution, the implementation of the mass line too was heavily influenced by anarchist theory.