As unsatisfying as it would be for the imperial core not to be subject to the same external horrors that they’ve inflicted on the rest of humanity, the world should not need to stoop to the level of the colonizers. The imperial core will continue to grow weaker as China and successive countries that develop continue to build an alternative model of global coexistence. These Western colonizers will then cannibalize their own and eventually succumb to the movements led by their own exploited populaces. At least, that’s the best case scenario for the world.
For America, there will be horrors. So many bastards died to keep black people in chains. Those bastards decendants will fight to the death for white supremacy upheld even if it is against their own self interest. Most likely through random acts of terrorism. However this plays out, even if the United States falls peacefully out of existence, the homegrown terrorists will fight for their right to abuse people differently than them. A cultural revolution against white supremecy is in order to stop the spread of fascism to the next generation.
