Back in the good old days when anarchist immigrants were banned, such an immigrant who protested “but I’m an anarcho-CAPITALIST!” would be received at Ellis Island with a sidelong glance then escorted right back up the gangplank.
I think the right actually should disavow Hitler, but this way:
“I disavow National Socialism because socialism is the most monstrously destructive ideology there is, and I disavow Hitler because his imperialism set the white race back millions of innocent lives.”