When Warning Signs Are Ignored, Innocent Lives Pay the Price The latest massacre at a San Diego mosque is a stark reminder that the United States has yet to grasp the gravity of white supremacist violence and its online radicalization.
The involvement of 18 year old Caleb Vazquez, who had been flagged by law enforcement officials as a "potential threat," raises uncomfortable questions about the failure of authorities to act decisively in preventing such tragedies.
The FBI's decision to flag Vazquez last year highlights the agency's growing awareness of online radicalization.