A hate crime investigation is under way in D.C. after a gay couple’s night out ended in a brutal beating.Michael Hall Jr. has a broken jaw and a fractured cheekbone following the attack Sunday morning. The 29-year-old yoga instructor was operated on at Howard University Hospital Monday. His parents, Mike and Gail Hall of Colonial Beach, Va., worried for their son’s safety when he moved to the District nine years ago.“Every morning, get up and turn Channel 4 news on and see if he was alive or not, who got killed or stabbed,” Mike Hall said.“My biggest nightmare was that...