Eminem attends the ‘Southpaw’ New York Premiere at AMC Loews Lincoln Square on July 20, 2015 in New York City. (Dimitrios Kambouris/Getty) Police in Fresno, Calif., have arrested a teenager for posting lyrics from Eminem’s 2000 track “I’m Back,” referencing the Columbine High School shooting, on his Instagram account. School officials at San Joaquin Memorial High School alerted local authorities when they spotted what appeared to be a threat to the safety of students and teachers online, and shut down lessons and activities on Tuesday amid an investigation. The Catholic school the 15-year-old rap fan previously attended was also locked down for the day as the teenager was taken into