A white University of Oregon law professor is under fire for showing up at a Halloween shindig this week in blackface.

Professor Nancy Shurtz donned the offensive getup in a bid to appear as Dr. Damon Tweedy, author of a best-selling book about the lack of diversity in medicine, “Black Man in White Coat: A Doctor’s Reflection on Race and Medicine.”

In a note to students, Shurtz claimed she wore the makeup in hopes of making a point about racism in the medical field, the Eugene Register-Guard newspaper reported.

“I, of all people, would not want to offend,” insisted Shurtz, whose daughter is in med school at Brown University.

She’s been put on paid administrative leave while the school sorts out the matter.

Meanwhile, 23 UO law professors signed an open letter demanding that Shurtz quit immediately, the paper reported.

“If these allegations are true, and you did in fact wear blackface to a Halloween party, you need to resign,” according to the letter.

“It doesn’t matter what your intentions were. It doesn’t matter if it was protected by the First Amendment. Blackface is patently offensive. It is overtly racist. It is wildly inappropriate. It reflects a profound lack of judgment. There is no excuse,” the letter reads.