Have you ever tried to have a conversation with a raging liberal? The second truth enters their ears, they shriek and REEEEE like banshees. If he didn't shout, they would have drowned him out. He had to shout because because being a decent human being in the conversation doesn't work when the other side is possessed. It's exactly like the movie The Exorcist, these demons just vomit over themselves at at you. Spiritual battle.

Don’t worry, his delivery was strong enough that they won’t be able to forget it, ever. All that will happen now is that it will echo in their minds each day as real life experience bears him out, and they won’t be able to shake it.