Firstly, as pointed out in another comment, it's not whataboutism to ask what the principle is by bringing up other examples. Whataboutism is a fallacy of relevance, the point you were asked is not irrelevant, it directly grapples with the issue at hand.

Secondly, which riches were my ancestors (I'm British) enjoying, and which ancestors? Try to be specific, you're advocating punishment, after all, wouldn't want to find out you're simply being bigoted against a group of people in that vague way bigots do.