Most mass shooters driven by personal grievance, and about one quarter by conspiracy theories and hate

A Secret Service study of mass attacks concludes that most attackers have a personal grievance in the workplace or other social environment, and about a quarter of them are motivated by conspiracy theories or hateful ideologies. Both scenarios come with predictable, observable patterns of behavior that might help prevent future attacks (given the implied unlikelihood of much being done about the guns they predominantly use in their attacks). — Read the rest