Northwestern has hired former U.S. Attorney General Loretta Lynch to lead an investigation into the culture of its athletic department and its anti-hazing procedures following allegations of abusive behavior and racism within the football program and other teams.Lynch, who served as Attorney General from 2015 to 2017 under former President Barack Obama, will begin her review immediately, the school announced Tuesday. She will seek input from faculty, staff, students and alumni. The university announced no timetable for the …