Lt. Colonel Dave  Grossman

Lt. Colonel Dave Grossman


Lt. Colonel Dave Grossman is dedicated to helping society understand violence. His work includes six non-fiction books, from his perennial bestseller, On Killing (with over half a million copies sold), to his latest book, Assassination Generation. He is a US Army Ranger, a paratrooper, and a former West Point Psychology Professor. Col. Grossman’s research was cited by the President of the United States in a national address, and he has testified before the U.S. Senate, the U.S. Congress, and numerous state legislatures. He has served as an expert witness and consultant in state and Federal courts. Since his retirement from the US Army, he has been on the road almost 300 days a year, as one of our nation’s leading trainers for military, law enforcement, mental health providers, and school safety organizations. Col. Grossman is the director of the Killology Research Group (www.killology.com).