6. The Beliebers
Bieber's fans are insane. Overdramatic? Yes. True? Yes. In a similar vein to One Direction fans, if anyone utters a bad word about their beloved, the internet goes crazy. Even potential girlfriends, family members and others closely associated with the stars aren't safe. There have been tales of abuse, online bullying and even death threats to largely innocent parties. Fans are blinded into thinking that by standing up for their man, he'll retweet them on Twitter or give them a personal shout out. That's not the case. Rather, it comes off as immature and more damaging to the star's credibility.