Well, yes

Public discourse in this country would be more civilised, productive, and robust if the left were less sanctimonious, less smugly certain of the righteousness of their cause, and more sensitive to the fact that everyone doesn’t see things their way.

I've mentioned before that this sanctimony is a real handicap for the left. As we're seeing in the Guardian this week, shrieking hysterically about how the other side is evil is a very good way of stopping yourself from thinking.