A board member of the Democratic Socialists of America has cameos in the film and stated in an interview that he was told by the brothers that his books were the inspiration for the series. http://www.freep.com/entertainment/movies/matrix6_20030606.htm
If you think this article was hard to read, try reading Baudrillard and West.
Reading too much into it?
Here is Larry Wachowski, the creator, quoted on a fan site talking about the films...
http://www.matrixfans.net/symbolism/meanings.php
Larry: Yeah, and he's probably more of a marxist than I am [Ken laughs], in terms of these ideas affecting and informing history...