Why are people hating on historical plantations and anything Caucasian

Did I miss something? I'm fine with it, just feel I missed something.

If I would tell people in Egypt to take down pyramids because it's in poor taste because the slaves built them.

What do you think would happen?

Tell the Chinese to take down their wall it's insulting as well because...??? It was a racist wall built to keep other ethnicities out . Therefore saving China from Any diversity issues.