We look forward to hearing Mayor Bill de Blasio answer questions on the presidential campaign trail about the city school system’s decision to wage war on “toxic whiteness” — defined in a way that deems virtually all whites toxic.

The city Department of Education has spent more than half a million bucks on training in combatting “white supremacy culture,” teaching of such sins as “perfectionism,” “a belief in meritocracy” and “the Protestant work ethic,” as one seminar-goer told The Post’s Susan Edelman. Any whites who object to being accused of deep-rooted bias, that same DOE executive reports, get called “fragile” and “defensive.”

This is not about improving sensitivity: It’s about telling people to shut up rather than even question lunacy that’s promoted in the name of racial justice. Don’t insult me with your awful facts!

The training is just part of Chancellor Richard Carranza’s drive to root out the bigotry that he claims dominates the school system — a system that in reality is packed with progressives. He has also demoted or forced into retirement more than a dozen top DOE officials (mostly white, but some black) who’d served Chancellor Carmen Fariña.

Hmm: That sure implies that Carranza thinks de Blasio’s first choice to run the city schools was herself a fan of white supremacy, doesn’t it? And that, if Carranza’s allowed to keep at it, that the mayor agrees?

Carranza named Deputy Chancellor LaShawn Robinson to run his new School Climate and Wellness division. She in turn tapped Ruby Ababio-Fernandez as senior executive director to run the Office of Equity and Access. And the office is spending more than 700 grand on “Courageous Conversation” training on racism in the workplace — a protocol centered on the “white supremacy culture” nonsense.

The office is spending another $175,000 on consultant Darnisa Amante, who says she works to “change mindsets around equity and dismantling systemic oppression and racism.”

Carranza is already notorious for denouncing any parent who disagrees with him as racist. Now we know that he’s taking the same approach to the entire school system, starting at the top.

You have to wonder if the chancellor thinks that the mayor, who after all is still another one of those straight white Anglo males, is himself too steeped in “white supremacy” to run the city.