Terrifying? Inevitable? Harbinger? In any case, it’s a first: Police in Long Island, New York, have arrested a man for not using Twitter. Someone named Justin Bieber, who apparently is a teenage singer, was supposed to appear at the Roosevelt Field mall on Friday, but stayed away because the crowd had become too unruly. Police asked a record label executive to help disperse the horde using the messaging service, and claim he didn’t cooperate.