More than 10,000 people worldwide claim they're the victims of a vast organized surveillance effort designed to ruin their lives, a phenomenon known as "gang stalking." Mental health experts see gang stalking as a symptom of paranoia.

VICE met up with a handful of Americans who claim their lives have been derailed by gang stalking to understand what serious consequences the phenomenon presents.

Producer/ Director: Sebastian Ischer

Editor: Stacy Kim

@Vice Media, LLC.