I think it's pretty clear there is a problem in education finance. That problem affects a lot of people of different racial backgrounds. Comments like that create discord among the very people you are claiming to want to help.
I don't think you can have a discussion about education without bringing up issues of race and class. I admit, that was a pretty untactful way to bring it up.
It's an uncomfortable subject. I'll handle it more sensitively next time.
I take no issue with the way you worded it (though I'm sure some people would, so I wouldn't use that phrasing on my company's blog). I take issue with the lack of evidence on that particular point. It happens. The rest of it was good, and your cause is admirable.