That’s a common assertion today: that there is no such thing as “black racism.”
That’s incorrect, and some of the worst racism expressed by black people today is towards other black people.
Tommy Sotomayor has done several videos on this subject, particularly focusing on violence and cruelty by dark-skinned black females against lighter-skinned classmates or acquaintances.
He talks about how black people have many names for lighter-skinned blacks, and for different degrees of melanin content. Words I've never heard before.