CHAPEL HILL -- UNC-Chapel Hill is under investigation by federal authorities for an incident in February in which an English instructor singled out a student for "hate speech" after the student spoke out against homosexuality. The university was notified of the investigation in a letter March 22 from the U.S. Department of Education's Office for Civil Rights. "Specifically OCR will be investigating whether an e-mail sent by a teacher on or about Feb. 6 ... constituted harassment based on race or sex and whether the university responded appropriately," the letter said. "Our review will include whether any similar incidents had...