On July 22, 2011, Anders Behring Breivik carried out a mass killing at a youth camp on Utoya Island in Norway, after first bombing government buildings in Oslo. Breivik disguised himself as a police officer and opened fire on young attendees of the Workers Youth League, killing 69 people, most of them teenagers. The attack lasted for over an hour, with the perpetrator fleeing the scene after committing the murders. This tragedy followed a bombing that killed eight people in Oslo, making it the deadliest day in Norway since World War II. Breiviks acts of violence shocked the world and prompted debates about the impact of far-right extremism.