NBC News | Think August 5, 2019 View on Publisher Site HKS Authors See citation below for complete author information. Joan Donovan Adjunct Lecturer in Public Policy Abstract While we often think about those who commit mass violence as acting individually, we must reckon with the fact that these extremists are never alone online. Citation Donovan, Joan. "El Paso Shooter Wasn't a 'Lone Wolf' — and His So-Called Online 'Manifesto' Proves Why." NBC News | Think, August 5, 2019.