I think the nationalist brainworms of americans do most of the heavy lifting, combined with the fact liberals are completely without principles. It’s not dissimilar to how they’ll happily use homophobia to attack Republicans or whoever the current international villain is simply because “they’re bad so it’s ok”. This same lack of principles applies to history too, which they will rewrite to suit their nationalist goals at any time with no principles or scruples. The core issue is nationalism. Anyone you can deprogram and change into an internationalist stops all of this.