Maybe, but then I would ask why don't we hear much about the actual prevention of a mass shooting/killing? One would think law enforcement would be touting their efforts when they stop one before it happens. Parkland, Orlando, Virgina Tech, Boston, etc. etc. There are probably hundreds of lunatics planning something, but most probably just give it up as they think it through. It just seems to me that when they have these guys in custody, and then on the radar something is preventing law enforcement from following through to the next step which would be prevention.There are likely hundreds of possible mass shooters developing at any time so its just a few who slip through.
Means, motive, opportunity. The USA is the world leader in the first two.
Did Law Enforcement DROP THE BALL AGAIN In Racist Buffalo Shooting? | Breaking Points - YouTube