Rates of violent gun assaults increased 32 percent in states that removed concealed carry licensing that mandated firearm training or proficiency requirements.
Mitchell L. Doucette et al., “Deregulation of Public Civilian Gun carrying and Violent Crimes: A Longitudinal Analysis 1981–2019,” Criminology & Public Policy (2023), https://doi.org/10.1111/1745-9133.12638.