> meaningful [word used neutrally] political upheaval

There's the potential for a lot more people to get killed, now the tactic of driving cars into crowds has been borrowed from Islamist terrorist by white supremacists.

> governance of, high-violence subpopulations like (southern) Italians, the Irish, and Africans.

There's your racism and colonialism right there. You could call it hegemonic and imperialist as well if you like.