Agree. Life is so much better when you rid it of people like this. I do not argue with drunks or Socialists; It wastes your time and annoys the pig..ooops mixed metaphore.
Just use filters to killfile that address. We had a "friend" who put my wife on Moveon's mailing list. That individual is "Unpersoned" and no longer exists.
If an explanation is required, we state that we have the unlimited saturation resources of the Media from which to hear their point of view, and do not need to hear echoes.