Trump's "child separation policy" is driven by hard-liners who might not understand—or care—that they are committing acts of genocide.
Asteroids, nukes, global warming? No need to worry. Jesus is going to come back to earth for a thousand years as chief functionary of some kind of government. He promises not to shank us all until then.
Apocalyptic Christianity amounts to a deep, religious longing for global annihilation, that many evangelicals equate with nuclear war. That would be dandy if they didn't have their fingers directly or indirectly on "The Button."