I want to add that I present all of this from a, "What would you do in the refugees position?" kind of way. These are egotistical and unrepentant genociders; use their own mindset against them. "Would you lie down and accept your death? Or would you fight to try and change your fate? Even if you were doomed to fail, wouldn't you want to take some of the people responsible for you and your family's miserable death with you first? You should really be more open to averting climate catastrophe for your own good."

Again, the threat should always be implicit for your own safety, but clearly center these people as the target of the violence for best effect.