Yeah I mean I know there's some nuance here but you know there were American Nazi rallies before we joined the war too? That doesn't really reflect all that much though. If your argument is power hungry dictators are going to play each other and feign alliances I agree. I don't think that says much about Nazism and Communism though.
Yes but USA didn't approach Nazi Germany and literally asked to be its fascist axis ally, Moscow did. By atrocities committed in Poland they wouldn't bet an eye lash helping Hitler with his Auszwitz operations, did you know that 1.5 million+ ussr citizens (mostly ethnic Russians) joined ranks of hitler army after Nazi Germany occupied parts of USSR
willingly?