Obsessed fans can be a downside of stardom. It's why Whitney Houston's character hired Kevin Costner to protect her in the 1992 movie "The Bodyguard."
The real life Houston had the FBI helping to protect her more than two decades ago when a "loner" in Vermont warned in 1988 that he "might hurt someone with some crazy idea" if the singer did not acknowledge him.
Source: CNN. Read full article. (link)