I don't know how many times I have heard the canard that we are trying to gloss over the "evils" of the past, how often the "white man" is the cause of every conceivable evil and so on. IF this is taken to heart, it could be a signal that there will be an attempt at balance in our schools. One can pray that this is true anyway.
And that, of course, is precisely what chafes liberals. The yearn for a society where anything outside of their own Stalinist orthodoxy is punished.
Those who seek the destruction of a free society are unfit to live in that same society. Tell them so.