An authorized biography of singer-songwriter Buffy Saint-Marie came out last year; “authorized” means that it was written with Saint-Marie’s cooperation, and it contains lots of quotes by her. Saint-Marie is a Cree Indian from Saskatchewan, who was adopted into a white New England family, and who later reconnected with her birth parents (probably; the records aren’t entirely clear). She quickly became aware of the ways in which the world was exploitative; this exploitation she identifies this as colonialism. Indeigenous people like herself get exploited, but it goes far beyond that:
“Colonialism doesn’t just bleed Indigenous people; eventually, it bleeds everybody except the jerks who are running the racket.”
I would only add that colonialism is related to capitalism; they co-evolved.