I've read what Robert Moses of The Algebra Project has said about teaching algebra to poor, especially black, students, and for the most part I agree with him. Recently I wrote a post about him, concerned about the use of graphing calculators in his program.
Now I find that he's a keynote speaker at the above-named conference. If you think I'm off-base about what lefties mean by "social justice", note that one of the speakers at the conference is from Rethinking Mathematics. To refresh your memory, Rethinking Mathematics is an offshoot of Rethinking Schools. For a full fisking of their ideas by yours truly, read the following two posts in their entirety:
Math For Social Justice, Part 1
Math For Social Justice, Part 2
If that isn't enough for you, read here about the former Weather Underground terrorist who is now a teacher in the social justice movement.
The evidence is abundant and clear. This movement represents a dangerous trend in education not only because students won't learn math content, but also because they'll be indoctrinated with leftist claptrap.