You wouldn't debate a mass murderer. You just wouldn't. You might tell bystanders "hey stay away from that guy he's a monster with a gun" but you wouldn't start debating the dude.
So I dunno what to say; you still haven't figured out that there's no saving fascists and they're not playing the same game you are - and if you don't figure that out, you will NEVER beat them. They will take advantage of your posture that this is normal or rational somehow and use it to harm more people.
Period.