I'm not saying what you are saying is off-topic. I'm just trying to share with you a different perspective.

This American talk about "whiteness" doesn't just get posted in an American museum. It gets posted on Twitter etc and then people on the other side of the planet read it. And the people on the other side of the planet may understand it very differently. But Americans never seem to think about that. (And I'm not saying the concept of "whiteness" might not have some application or usefulness in other countries, including Australia-but it certainly doesn't have an identical application.)

Or, maybe one is a non-US-based employee of a US-based multinational company, and the company leadership starts promoting all this talk to the entire company, without seeming to ever stop to think about how much sense it makes in a non US-context. (But would any non-American employees dare raise the question of how US-centric the biases of its US-based management are?)

Yes, my relatives in China are amused by this. Most people in most places have defined "racism" to mean the judgment that a person is bad in some way merely because of his or her race, regardless of any personal characteristics. But in recent years, Western leftists have edited the definition to make it race-specific, (un)ironically. You can only be guilty of it if you are white. If you aren't white, no matter what you say about or do to another race, it might be bad, but it can't be racist. The justification is that racism is about power, and whites are in charge, so only they can be racist.

So, my relatives want to know, are the baizuo (white leftists) claiming that in China, nothing white people say about or do to Chinese or blacks can be racist? Or are they claiming that they are actually "in charge" of us in China?

Instead of race, look at power structures and how they support opportunity for groups of people. Thoughtcrime is not worth the efforts.