But now using "imperial boomerang" to explain violence within settler-colonial states like US and Canada completely ignores that these nation-states were actually foundationally organized around the violence of genocide, enslavement, colonial expansion, and dispossession.

This is misread of Césaire and also ignores that the violence "at home" is largely targeted towards those who are not of the "First World" - for example, what George Manuel would refer to as the "Fourth World" when referring to Indigenous peoples located within the north american imperial core.

2) "Imperial boomerang" also holds less true in our current global context where violence is co-constituted - domestic policing and imperial militarization do not necessarily follow chronologically, especially in the imperial core, they are completely entangled with each other.

The violence is not "boomeranging back," it's literally baked in and originates here. If we take Saidiya Hartman's invocation of the continuum of 1492 and the New World order on this side of the Atlatnic seriously, then we must see that colonial, fascist violence has always been here.

Europe should support land back movements by lowering immigration barriers and taking back its white people

All of us should just leave and give the land back to the people our ancestors stole it from.

Yes, but the process of revoking consent should be Elder-guided