And greedy leaders use it as an opportunity for genocide.

Primarily because of our leadership

American exceptionalism may have existed in distinct historical moments, but it never could have existed indefinitely. That is a silly myth at best and militaristic nationalism at dangerous worst. Who are (we) Americans to define/determine for the world what is exceptional? What do exceptionalists know for scientific fact about themselves? Rather than being scientific, exceptionalists probably rate everything/everyone as either perfect or less than perfect, which sets up an unreal dualism. It would be good for this nation to mature beyond the notion that America/Americans are superior in anything and everything to other nations. How arrogant and conceited !

I genuinely hope that it is marking the end of American dominance in the world, and creating conditions which require mutual understandings, cooperation, and shared responsibility. That would be a better world.