#internal colonies

there's something i must draw your attention to; in hasdeo and bastar, both regions in chhattisgarh, the indian police and military are unleashing grave violence against the indigenous peoples of india, to dispossess them of their land, livelihoods, and ultimately their lives in order to enrich the imperialist economy. this is genocide, and one that goes under-reported by the national media and ignored by the international media. the indian nation state only claims decolonisation to mask its many, many colonial projects, spread across the length and breadth of the subcontinent. i am naming two egregious instances. there are many more.

Does anyone here have any reading recs or references about the concept of internal colonisation/internal colonies? I've mostly seen it applied as a concept to racialised people in the US but it may come up elsewhere too. See it a fair bit in older Black power type writing and I'd like to understand more about it as a theoretical framework. To be clear I'm not looking for work that runs with the concept as a starting assumption — more to understand why it emerged and how it was used as distinct from e.g. racism, classism