Thanks to las for pointing me in this direction.

As some of my long-time readers know, I tend not to have much patience with things like "blog against racism." Yes there have been and continue to be well-crafted and insightful essays on the topic written each year. But for the most part it is cost-free internet posing which allows privileged white folks like me to feel smugly self-congratulatory about "doing their part" without actually making any effort to effect real change or taking any risks. (And no, getting 100 replies saying your post is awesome is not progress; just as neither being flamed by Civil Libertarian/KKK trolls, nor being called out by PoC who don't buy your act constitutes risk.)
I have had an on duty, in uniform sheriff's deputy curse me out loudly and publicly for being a race traitor in Royston, Georgia. I have had a black civic leader here in Wilmington, NC, tell me I am a racist because I married Valerie. I have never in the last 30 years been in a situation where a debate on race has had any positive effect -- or any hope of having a positive effect.
The only weapons against racism -- or any form of ignorance -- is education and example.

Which is why I was pleasantly surprised when, by following a link in las's journal, I found an excellent example of both.
Over on John Scalzi's blog (which I've refernced before) writer, editor, and educator Mary Ann Mohanraj posted two essays -- or one two-part essay -- on racism in general and racism in writing in particular. Well worth reading.
Part one.
Part two.

(ETA: Set aside an hour or so and be sure you follow all of the links in her essays. And go back to some and reread later. It's a pretty thurough education; I keep finding new things.)