“Fascism discovers sovereignty to be inherent in society when it is juridically organized as a state. Democracy, therefore, turns over the government of the state to the multitude of living men that they may use it to further their own interests; fascism insists that the government be entrusted to men capable of rising above their own private interests and of realizing the aspirations of the social collectivity, considered in its unity and in its relation to the past and future. Fascism, therefore, not only rejects the dogma of popular sovereignty and substitutes for it that of state sovereignty, but it also proclaims that the great mass of citizens is not a suitable advocate of social interests for the reason that the capacity to ignore individual private interests in favor of the higher demands of society and of history is a very rare gift and the privilege of the chosen few.”

Source: How Europe Underdeveloped Africa (1972), p. 310.

“The Doctrine of Fascism” (1935 version), Firenze: Vallecchi Editore, p. 15
1930s

Source: The Political Doctrine of Fascism (1925), p. 111

Corteo a Reggio Emilia in memoria della strage del 1960 http://www.lariscossa.com/2019/07/07/corteo-reggio-emilia-memoria-della-strage-del-1960, 7 July 2019

As quoted in Revolution and Counter-Revolution in Spain (1963) by Felix Morrow
Van Paassen interview (1936)
Variant: No government in the world fights fascism to the death. When the bourgeoisie sees power slipping from its grasp, it has recourse to fascism to maintain itself.

Ch. 1, The Class Character of Fascism https://www.marxists.org/reference/archive/dimitrov/works/1935/08_02.htm#s2.
The Fascist Offensive and the Tasks of the Communist International in the Struggle of the Working Class against Fascism

Originally reported by Robert Cantrell. But years later Cantrell told Arthur Schlesinger, Jr. that that was his own summary of his conversation with Long, not Long's exact words. See They Never Said It by Paul F. Boller and John H. George (1990) https://books.google.com/books?id=6zfnCwAAQBAJ&pg=PA94&dq=when+fascism+comes+to+america,+it+will+be+called+anti-fascism&hl=en&sa=X&ved=0ahUKEwjo0sSQ0_TRAhWmwVQKHQ85C9M4KBDoAQguMAQ#v=onepage&q=when%20fascism%20comes%20to%20america%2C%20it%20will%20be%20called%20anti-fascism&f=false.
Misattributed
Variant: When the United States gets fascism, it will call it 100 percent Americanism.

Table of Contents, Fascism
Blackshirts and Reds (1997)