pretty telling that first reation of some here can be summed with: what is really white?
To me, anybody who can genuinely think in binary terms of “white” people and “black” people probably has a very limited exposure to the entire colour palette of humanity and, again, this is conjecture, probably has a damaging US-centric view of what is a global issue.
If a five year old asked me the same question I’d probably engage with them, but as an adult, gtfooh.