Dhillon, a Sikh immigrant from India, and allies say they are merely representing the interests of all Americans, giving literal meaning to Martin Luther King’s grand aspiration of not being judged “by the color of their skin but by the content of their character.” In her current role, Dhillon, 57, has sued Harvard twice in the last six weeks, most recently accusing the school of tolerating antisemitism on campus. In February, she sued Harvard for not handing over student data to determine whether the university is still using race in its admissions decisions. She is dragging Harvard and other universities...