The number one rule for all mass murderers, be it global elitists or psychopaths who shoot up schools, is seeing that you're more likely to end up killing yourself, then just start with yourself. That way all of your problems will be solved.
And even if you don't have plans to kill yourself, your problems will still be solved by your suicide. You won't have to worry about the climate changing, all those people that you think aren't worth anything or that your mommy didn't love you enough.
AND the added bonus is the rest of us get to live free. We don't have to worry about the psychopathic narcissists of the world.