By NICK PERRY, Associated Press WELLINGTON, New Zealand (AP) — A Christchurch businessman who shared a video of worshippers being slaughtered at a New Zealand mosque was sentenced on Tuesday to 21 months in prison. Philip Arps had earlier pleaded guilty to two counts of distributing the video, which was livestreamed on Facebook by a gunman on March 15 as he began killing 51 people at two mosques. Christchurch