I owe you an apology. Someone has taken advantage of my lack of attention and wormed their way into the comment system. They were posing as several different people (mostly Greg G and Mesaeconguy) and intentionally posting inflammatory things in the comments. I allow a great freedom to my commentors in that I do not screen or block comments. Nevertheless, this kind of behavior cannot be tolerated. I have blocked that person from commenting on this blog and the offending messages have been removed.
I do apologize for this unpleasantness.