thoughts about colonialism and the subaltern

In this semester i studied too about topic colonialism , the subject subaltern and the power hegemonic over minorities.
The construction of  a single social sistem and economic where the consumism sweep all the diferent way of life, is really violent for a nation it's not  inserted in thar  kind of system. the option to a good life it reduced
Under this sysmtem, the comunities indigenous it was debastated with her extraction and explotation indiscriminate of the naturals assets.
This facts, added too the racism on the par of the society, when the posibilitation to  indigenous be relegated to the poverty and clasificated to social class, it the principal characteristic of a subject subaltern.
The colonialism is the principal factor, in my opinion, the abuse and submission in the world, and support the racism and the violence over the race it's consider lower.
This kind of bihavior sistematized keeping the inequility of clases and deny the possibility of survive of survival of a culture different from the one that prevails.