Rosen defended guest's remark that "if you have a white mother and an African father ... [y]ou're just some kind of mutt" Research ››› April 2, 2008 3:18 PM EDT ››› MEDIA MATTERS STAFF ? Short Link copy link We've changed our commenting system to Disqus. Instructions for signing up and claiming your comment history are located here. Updated rules for commenting are here. View the discussion thread.