Who are these people using WMDs for mass murder in America?
They are men who have been taught that there is a social heirarchy with God at the top. After God comes white, Christianist, males, then everyone else based on religion, sex, sexual orientation, and skin color. This allows them to devalue all those NOT like them. They also believe in severe punishment, up to and including death/war, as a necessary tool for enforcing their world view. “Do what I say or die, you nonhuman animal.”
These are the men who kill others in massive numbers so easily and they are defended by those like them: some of whom are our elected officials who get money from the #NRA and who need to be voted out of office.