One point i like to make regarding colonization, is that you can look at Western society, economy, and consciousness as being thoroughly colonized.
Looking at the history of enclosure, colonization, and privatization, it is often tempting from within the Western paradigm to see colonization as something that we need to protect others from.
In reality, we need to de-colonize the West.
Liberatory activists in the West often expound on the need to de-colonize our own consciousness, which is certainly true, but the deep connection is often not made to the entwined need to de-colonize the economy, the land, the workplace, and not just in terms of how our minds and language define particular classes and cultures and peoples, but in hard terms of who "owns" land, who has political authority, who can make decisions about others, etc.
The need for access to land for local, personal, familial, and community food production, challenges the deeply entrenched colonization of "our" society, economy, and consciousness. It is generally "unthinkable" to even consider challenging the legitimacy of land ownership. But ultimately, Western efforts at de-colonization cannot "defend" Africa, or end racism inside Western societies, without facing the intimately deep penetration of colonialism into our societies, our workplaces, our minds and imaginations, and our political economy.
At least, that's how i often think.