Should the populist Left work with the populist Right?

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A significant ideological split within GOP politics is as clear and vitriolic as the one within the Democratic Party. And that growing division means that, along with vehement differences, there is ample agreement on specific, consequential issues between the factions that identify as the “populist left” and “populist right” . . . Should [the populist left] work in conjunction with those on the right to build a majority and implement those policies, and engage in dialogue with opinion leaders and media figures on the right to reach more people who can be persuaded to think in trans-partisan, working-class terms? Or should it declare anyone associated with the populist right off-limits even for issue-by-issue collaboration on the ground that other views they hold are pernicious? — Glenn Greenwald