The union guy might have been sending a message. “20 dead with a gun” sure is close to the mark.
Think “the red queen” in Manchurian Candidate.
Think “Professor Raoul X,” a guiding hand of history.
(I’m a novelist, I have a license to think wild thoughts.)
I’ll attest to the fact you are most excellent and if not factual, near accurate, in your written works of art.
The kid was a nut case; he had nothing better to do than watch TV all day long; so he heard the message!