On paper, "liberal intolerance" is something of an oxymoron, like "jumbo shrimp," "loyal opposition" or "conspicuous absence." But what makes oxymorons funny is that they are real things. There are jumbo shrimp. Absences can be conspicuous, opponents can be loyal, and liberals can be staggeringly and myopically intolerant. Last Friday, in a public radio interview, New York Gov. Andrew Cuomo offered the sort of potted analysis of the national Republican Party one would expect from an MSNBC talk show. But he went a bit further. After nodding to the fact that, historically, the New York state Republican Party has been...