The American Left are really the new imperialists in this world. They will impose their leftist, anti-traditional agenda on the entire 3rd world.
I suppose because of their 50 year run-of-luck and success destroying America’s homogeneity and culture, they simply can’t comprehend other nations wanting to protect its own culture.
There is no left wing that is uniquely American. Internationalist Marxists are the same worldwide. Even a cursory study of their philosophy reveals a contempt for all cultures; in the last chapter of the Manifesto, they express their intent to engage in “the forcible overthrow of all existing social conditions”, across the globe.