We can no longer effectively use valuable class-based analysis (where the expression "white privilege" originated), precisely because, as PP have pointed out, its premises and conclusions have been divorced from context and reduced to sound bites in what is scathingly termed "oppression Olympics".
I think it's incredibly dangerous to decree that Fox has no right to define racism. What is the justification for that?
It's obvious to me that POC living in a predominantly white country may have not only a different definition, but also and much more importantly much more experience of how this racism effects them in their lives. And that we should give much weight to what they have to say on racism.
But we shut down much needed societal debate around all of these issues of we decree that an entire section of the population has no right to fully participate because of their skin colour, their sex, their age or their ability. Much as I don't wish to exclude men from the discussion around sexism and equality - because we have to reach solutions addressing the issues together or they will not work.
And yes, "white privilege" exists, but as a concept it does not serve any useful purpose if it is applied devoid of context. Worse still, it is counterproductive if it is applied devoid of context - the assertion by an upper middle-class POC that a white homeless drug addict is privileged over them because of their race is not simply ludicrous, it is damaging to the fight against racism.
We on the left have embraced this damaging discourse to our own detriment and until we emerge from identity politics, I fear we will continue to prove unable to effectively address, let alone redress, the inequalities caused by class, race and sex and we will continue to lose public support.