Brydo, I would love an opportunity to discuss racism in a mature fashion, definitely. I clicked on the topic for that reason, hoping for that precisely.
However the presentation of your question was subtly (and probably unconsciously) loaded. It isn’t difficult to discuss racism at all but by using this starting point you undermine a serious and deeply hurtful issue. It suggests people who complain about racism are irrational and shut down debate. So, in one go, white people become the victims!
It wasn’t a racist question- it was loaded, pre-emptive and ill informed.
When debate hinges on theoretical silly scenarios, like the ones you presented, this serves to demean the realities of racism, which has resulted in centuries of hate-fueled genocide at its worst, daily occurrences of abuse and bias and micro-aggressions, like your question sadly, at its least.
So, sorry to say, your starter for ten got my hackles raised and any debate will be pointless.
May I suggest some simple online research:
This is a great starting point.