He’s making fun of the worldview of the left. It’s on the same humor plane as Doonesbury’s “separate drinking fountain’s” comic strip.

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But surely the cure is in working for greater inclusion, not cultural isolation. That’s what observers as different as Sleeper, Arthur Schlesinger and John Gardner have been saying. That’s what Gary Trudeau was saying in that hilarious (and sobering) series of “Doonesbury” strips that ended with black students — already having attained their separate courses and dormitories — demanding, at last, separate drinking fountains. Sleeper’s insight is that there is nothing “natural” or automatic about those values and attitudes that used to be called “the American way.” Educators must teach them, he says, and also “teach that self-esteem is enhanced not simply through pride in one’s own cultural origins but, more importantly, by taking pride in one’s mastery of civic virtues and graces that all Americans share and admire in building our society.”