From Henry A. Wallace, VP to FDR and a Republican turned Democrat. Of several, prescient points of what constitutes fascism in America, this is only 11. You can read his full essay, written in 1944 about the subject here.
11. The American fascists are most easily recognized by their deliberate perversion of truth and fact. Their newspapers and propaganda carefully cultivate every fissure of disunity, every crack in the common front against fascism. They use every opportunity to impugn democracy. They use isolationism as a slogan to conceal their own selfish imperialism. They cultivate hate and distrust of both Britain and Russia. They claim to be super-patriots, but they would destroy every liberty guaranteed by the Constitution. They demand free enterprise, but are the spokesmen for monopoly and vested interest. Their final objective toward which all their deceit is directed is to capture political power so that, using the power of the state and the power of the market simultaneously, they may keep the common man in eternal subjection.