Anti-free speech demonstrators at one of America’s most vaunted universities have claimed a pair of scalps — a husband-wife duo who say teaching is too much trouble in a campus climate “not conducive to civil dialogue.”

Yale University professors Nicholas and Erika Christakis, who both have always gotten overwhelmingly positive reviews from students, said they have had enough, after an email she sent sparked a campus-wide controversy that soon pulled him in.

“I have great respect and affection for my students, but I worry that the current climate at Yale is not, in my view, conducive to the civil dialogue and open inquiry required to solve our urgent societal problems,” she said in an email to The Washington Post.

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