A collective of colleges in Los Angeles suburb has been in an uproar for the past week over Facebook posts from students with one request for housing: No white roommates. A Facebook post from Karé Ureña, a junior at Pitzer College at the Claremont Colleges, asked for fellow students to join an off-campus house for the upcoming school year. “POC only,” she wrote, using the abbreviation for “people of color.” Ureña, who is black, added, “I don’t want to live with any white folks.” The post, first reported by the Claremont Independent student magazine, sparked outrage from the campus and...