Teaching kids about the inequalities of the past seems like a worthy item to add to the curriculum.
What isn't "teachable" to those who have not suffered from institutionalized racism is the effect it has on those who suffered. Teaching the inequalities of the past is not going to be a comprehensive measure but it's necessary.
They way these people see it we should stop doing history classes about the holocausts because it discusses inequalities.
When it comes to the broad topic of minorities in education, I think the conservatives have a point to a small extent.
Look, when I was in class at my public high school in Texas; the assignments were given, you either did the assignment or you didn't. The teacher didn't give one version of the lecture to part of the class and a different version to another part of the class. The assignments were the same, the instruction was the same. Whether you did the work as a student was up to you. Same deadlines; same grading (as far as I know). Ethnic minorities didn't get the short end of the stick on this. If they didn't do as well, other factors may have come into play but the classroom wasn't slanted one way or the other in the school I went to anyway.
The argument over what should be taught is always hilarious since students are regularly taught, in History anyway, perhaps a fifth (to be generous) of what they should be exposed to. Telling the truth that there was codified racism in America for most of our existence shouldn't be a point of argument. It is, after all, the truth.