Armstrong's reply is nothing but chiding Harris for being rude, and waffle. Returning to the "niceness" discussion, it strikes me that if Harris had made the same points with a straight face and without sarcasm, Armstrong would have been left with nothing but waffle.
I'm not sure Armstrong's reply is so bad as all that-- it's legitimate to point out that there's a difference between doing science and using the reputation of science as an excuse to commit atrocities, as in Communism and Nazism.
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).