If you think that teaching math involves, well, teaching math, then you've missed the folks who also want to teach "social justice."
An excerpt from the City Journal article:
New York City’s Department of Education insists that the radical math conference was perfectly appropriate. In fact, as I recently learned, the whole affair got rolling with the assistance of the DOE, which gave a financial grant to the conference’s principal organizer, Jonathan Osler. Osler is a math teacher at El Puente Academy, a small “social-justice” high school in Brooklyn. In 2005, he and two math teachers from other schools applied for the DOE’s Zone Teacher Inquiry Grants Program. Their application proposed “the creation of a system to bring together NYC math teachers to share ideas, curriculum, resources, and experiences integrating issues of social justice into math classes.” Some of the social justice issues that math classes could explore: “Check-cashing locations ripping off poor people. H&R Block and Jackson Hewitt ripping off poor people. Foreclosure agencies ripping off poor people. Issues of joblessness, homelessness, incarceration, lack of funding for education, excessive funding for war. . . . The list goes on and on.”