What the heck is “white culture”?
Do white people exist? Well, our enemies seem to have no problem identifying us, so we must exist.
So "white culture" is the culture of people who identify as, or are identified by others as, white.
IMO, it's the culture of the indigenous European peoples and their diaspora.
The point of identifying normal values as part of "white culture" is to diminish them as a force in society by making them a matter of race. Dig a little deeper, and one soon realizes that what is called "white culture" is what Marxists refer to as "bourgeois values," with the racially tinged attack on them being part of the Marxist assault on established society.
Starkey is a genuinely good historian, a political and social conservative, and gay, which makes him a troubling figure for the Left. And in attacking the Black Lives Matter crowd, he is dead on the mark, both in it being expressly racialist and Marxist in its core thinking.
In private at least, I am sure that the leadership of BLM would have to admit that Starkey is correct, that they oppose "white culture" and are jealous of the prominence of the Holocaust. And as we now know, with the leadership of BLM being thieves, they are genuine Marxists.