Justin Bieber Slams Selena Gomez Fan Calling for Hailey Bullying

Justin Bieber is slamming a Selena Gomez fan as a "sad excuse of a human" after she shamelessly called on other SG fans to bully his wife, Hailey. The Biebs actually put the woman on blast, reposting a snippet of the so-called Selena Gomez fan…