Walzer has invited his colleagues to grow up. Very few of them will accept the invitation, since a major facet of the Leftist psychological syndrome is perpetual adolescence, but the article provides some small comfort for conservatives nonetheless, because in it the author concedes the propriety of certain core principles of conservative thought, for example, when he says "a tough materialist analysis would be fine, so long as it is sophisticated enough to acknowledge that material interests don't exhaust the possibilities of human motivation (emphasis mine).
Marx is dead --- caput --- finito.
I wish that were true. I fear it isn't.