I used to work in an industry with lots of temp staff, the majority of which were non-white. Apart from my boss and his boss, I encountered no racists attitudes from my fellow white workers (OK, I lie, a few of the white temps from upper South Africa (i.e. not Cape Town) were pretty damn nasty), presumably because most of us grew up in a very cosmopolitan UK. The racism of some of the East Asian temps (anti-black), and the black temps (anti-white) had to be seen to be believed.
If I catalogue every person I’ve ever known by racist attitudes, without doubt the most racist would be black. Ditto second and third place, probably fourth too. I’ve also known blacks that were not racist at all, so it’s certainly not across the board.
Edit:
Do us whites even have a term for whites with a black attitude (whatever that is) comparable to the black racist term of ‘coconut’ used blacks like Trevor McDonald?