Wotannacht
Baby Onion
The idea to weaken the cohesion of a people trough race-mixing isn't something /pol/ cooked up on their own. Peking, for example, has been flooding Tibet with loads of Han settlers since ages and encourages interracial marriage between those two groups, their goal is to erase Tibetian unity to dampen any independence movements of that region.This makes no sense though, if everyone was homogenous via racemixing they would be even more united to overthrow any regime out to abuse them, not that I expect /pol/ to have any intelligence. Hell irl America and the rest of the New World are famous for being mutts and have a strong individualist streak, South American countries regularly go through political revolutions.
Source is this Washington Post article.