So are we theorizing it's an ex-member who was banned based on black or Jewish issues?
I think so.
I'll go you one better. I'm thinking that this person probably was banned once before over something racial, then re-upped and has been avoiding racial issues. I'm willing to wager that this person is a long time member in good standing, one where you would never guess that it would be him.
My former tagline stated, "One may smile and smile and be a villain." That principle more than likely is in play here.
Oh, and thanx to Billy Shakespizzle for that line! ;-)
I wouldn't narrow it that much. My guess would be a former freeper who was banned for any reason, and gets his jollies posting the most repulsive stuff he can think of, as his "revenge."