An extraordinary documentary called "Bully" captured a behavior adults hear about, but rarely see: the way some kids pressure and relentlessly harass their peers. Filmmaker Lee Hirsch was embedded in several schools for an entire year. What he filmed was so raw and eye-opening that the project catapulted a movement, sounding the alarm about the critical and dangerous issue of bullying.

Something profound has also happened as a result. In the time since "Bully" was released, a number of kids and parents profiled in the documentary, and the filmmaker himself, have been on life-changing journeys, and in some instances have experienced remarkable transformations.

AC360° has dedicated the past year to tracing the course of their journeys and personal missions. In partnership with Cartoon Network, we want to share their stories with you in a powerful documentary called "The Bully Effect," premiering on CNN on February 28 at 10 p.m. ET. The program will air again on March 3 and 9 at 8 p.m. ET.

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