LOS ANGELES A camera phone captured a UCLA student being shot with a stun gun by a police officer after he allegedly refused repeated requests to show his student identification and would not leave a campus library, university police said Wednesday. The incident occurred about 11 p.m. Tuesday after police did a routine check of student ID at the Powell Library computer lab. "This is a long-standing library policy to ensure the safety of students during the late-night hours," said UCLA Police Department spokeswoman Nancy Greenstein. She said police tried to escort Mostafa Tabatabainejad, 23, out of the library after...