School shooters are sometimes manipulated and other times they are simply known by FBI who do nothing to act before the crime as the outcome serves a political objective.

yet somehow refuse to accept that these are real victims, and that people died."

That is a different topic.

I'm not in the boat of believing fake victims, as it's much easier for the alphabet agencies and their allies to kill or let tragedies happen than to fake deaths.

Collateral damage plays better in mainstream media for dramatic effect and to create political pressure to push objectives quickly.