If I had to more accurately characterize the perspective that White people have no business talking about Black racism, I would characterize it as a liberal perspective, not a Black one.
I most certainly, vociferously and unilaterally disagree.
No, many black people (much more than a simple minority) think white people cannot teach black kids (not just during Black History Month but overall) as they don't have the proper 'perspective'; I've heard and read that more than once over the years from a plethora of black 'thinkers' (an oxymoron if there ever was one). It's also the same with black baby adoptions by white adoptees. Many in the black community take offense at that, and so push to stop such adoptions as they are 'out of race' and 'not in the child's benefit'. Of course, drugs, gangs, prison or the graveyard are all quite acceptable black 'values'.
We can't talk about black racism because that's racist. But the fact remains that murder is a majority black proclivity (what, 12% of the population overall but 50% of the murderers?), with victims being both white and black; white on black murder is much more rare. Blacks raping whites is pretty common; not so common is whites raping blacks. Of course, I'm a racist crackuh for pointing out those inconvenient truths.
Blacks do not want to discuss their dirty little no-so-secret: They are flaming, unapologetic racists proud of their hereditary and institutional racism. It's just so much easier to blame whitey for all the ills of their depraved black culture.
Back in 1982, I was going to apply for food stamps as I was on unemployment, and I really was not doing well financially. A black lady at the unemployement office answered, when asked if I can get food stamps, "Honey, you're the wrong color." But play the 'what if?' reverse game: A white bureaucrat telling a black they're the wrong color.
Hilarity ensues. Mass protests and riots ensue.
This commieracistniggathug-in-chief black precedent and his pitting one group of people against the other racial demogoguery has allowed my inner racist to come out, and I'm good with that. Two can play the racist game. Pushback: It's a bitch.