The implication of this statement is probably supposed to be that it's the west that did that. However, colonialism never conquered Africa. They took over Ottoman/muslim colonies. Muslims, and by that I mean the now dead state that is the religion, conquered 90% of the colonies, and inherited the remaining 10% from the Romans. The only big exception to that is the US.
In America, before the US there were Aztecs and Incas, both of whom were empires that ruled by fear, by regularly massacring large amounts of people.
The primary point is that it sucked, not who did it.
> However, colonialism never conquered Africa.
As I'm a British national, and the British empire was famously the biggest, my ancestors managed to get up in basically everyone's business in the colonial era.
Even aside from all that stuff we nicked and put in museums, and the war crimes the British government has even been doing some official apologising for, it was the British empire that invented the concentration camp for use against… other colonists: https://en.wikipedia.org/wiki/Second_Boer_War_concentration_...
My forebears don't get an "it's fine" badge just because the target was, in that case, a different bunch of Europeans from what is now a day-trip away.
> In America, before the US there were Aztecs and Incas, both of whom were empires that ruled by fear, by regularly massacring large amounts of people.
Yes, I know. Everything being awful everywhere before the industrial age doesn't mean what the (in that case Spanish) did was fine, it makes it the equivalent of a drug-gang turf war where nobody holds any of the belligerents in high regard.
In America, before the US there were Aztecs and Incas, both of whom were empires that ruled by fear, by regularly massacring large amounts of people.