I stopped engaging in cordial debate with them a long time ago. I merely pointed out how they're just repeating something they read on Twitter, link them to the articles disproving their lies, and then call them a knuckle dragging red state flyover reject. I urge people to do the same. You're not going to change anyone's mind and no one asked you to save the world. Just tell them to f/o and make them feel shame and regret for opening their mouth.