You may remember this story from last fall. Leftists protesters just claimed two more scalps.

The Atlantic reports.

The Perils of Writing a Provocative Email at Yale

Last fall, student protesters at Yale University demanded that Professor Nicholas Christakis, an academic star who has successfully mentored Ivy League undergraduates for years, step down from his position as faculty-in-residence at Silliman College, along with his wife, Erika Christakis, who shared in the job’s duties.

The protesters had taken offense at an email sent by Erika Christakis.

Dogged by the controversy for months, the couple finally resigned their posts Wednesday. Because the student protests against them were prompted by intellectual speech bearing directly on Erika Christakis’s area of academic expertise, the outcome will prompt other educators at Yale to reflect on their own positions and what they might do or say to trigger or avoid calls for their own resignations. If they feel less inclined toward intellectual engagement at Yale, I wouldn’t blame them.

Nicholas Christakis will continue on as a tenured Yale faculty member. Erika Christakis, who gave up teaching at Yale last semester, recently published a book, The Importance of Being Little: What Preschoolers Really Need From Grownups.

She has no future classes scheduled.

The controversy that culminated in this week’s resignations began last October, when Erika Christakis was teaching a Yale class called “Concept of the Problem Child.”

An expert in early childhood education, she’s long been critical of ways that adults deprive children of learning experiences by over-policing their behavior. When Yale administrators sent an all-students email advising Yalies to avoid “culturally unaware or insensitive choices” when choosing their Halloween costumes, Erika Christakis responded with an email of her own, acknowledging “genuine concerns about cultural and personal representation,” lauding the “spirit of avoiding hurt and offense,” but questioning whether students were well-served by administrators asserting norms rather than giving them space to shape their own.