2 centuries? European colonialism continued well into the mid 20th century. There are still people alive who directly participated in them. Besides that, even thought most alive today did not participate directly they still benifit immensly from the colonial past of their countries as anouther comment allready mentioned.

And taking responsibility has been very slow/late and limited, often being limeted to apologies without reperations. The Belgian Crown for example only apologized for its involvement in forced labor and exploitation in the Congo three years ago. Germany only recognized its genocide in Namibia two years ago and refuses to pay reperations.

So yes for the shit they did (or bear a responsibility for if you wanna be more percise).