Question: Im Not Ashamed is a biographical drama film, based on what massacre involving two American spree killers Eric Harris and Dylan Klebold, who killed 13 people and wounded 24 others? 
Sentence (from "I'm Not Ashamed"): Scott is the main protagonist, and the story of both gunmen who committed the shooting, Eric Harris and Dylan Klebold, is intertwined with Scott's.
Relevant evidence: Yes