You do wonder if pernicious and malevolent ideas, toxic ideas, are like viruses. They take over a brain, a being, and lead to terrible actions. A human being gets it in their heads that bullets will end the argument, or further a cause, and what is the cause? More pain and more suffering.
A bullet doesn't end the argument. The arguments will continue. A bullet does end a consciousness. And we are all diminished in the process. But we carry on. We remember that life is not just pain and suffering. There is love, and hope and kindness and grace.
We must remember, we must not forget. We must live, and throw our lot in with those who live and try to make life a little bit better. We can't forget joy and laughter.