Dave Cullen is an American journalist and author. He is best known for his 2009 book Columbine, which is an in-depth look at the 1999 Columbine High School massacre. He has also written for publications such as The New York Times, The Washington Post, and Salon.com. Cullen has won numerous awards for his work, including the 2010 Edgar Award for Best Fact Crime. He is also the author of Parkland: Birth of a Movement, a book about the aftermath of the 2018 Stoneman Douglas High School shooting. Cullen is a passionate advocate for gun control and mental health awareness. He is dedicated to telling the stories of those affected by gun violence and to helping create a safer future for all.