I meant in the sense as: the indigenous americans or the descendants of slaves in the US could be considered nations of peoples within the US. As a marxist, I would centre nations of peoples in class dynamics so for example the above would be in the context of US settler colonialism.
Nations and races are social constructs so deconstructing them can be useful in understanding concrete property relations.
For example, the settler nation of the US allows some people of colour to join and share in its loot actively suppressing both indigenous peoples (some reservation areas have a life expectancy of 40yo) and the plurality of black folks (the world's largest incarceration system ever is primarily designed to lock up black folks to (1) remove labour competition from the settler nation (2) provide a rural jobs programme in terms of priaon guard labour (3) stifle the revolutionary threat against the capital order.