Top answer using Le STEM Logic:.
I'd start by offing people who are physically and mentally disabled insomuch that they cannot function independently. This also includes really old people who fall into this group. Obviously merely being a child doesn't count on this one.
That includes the autistic spectrum and all depression/anxiety disorders, right? Including them, and people with minor disability caused by injury, up to 15% of the world is disabled. This is by far the largest group mentioned, accounting for a tick over a billion people when we toss in soldiers who lose a foot, workmen who lose a finger, and Redditors who lose their nerve every time they talk to a girl.
I would also start killing off repeat criminals, sex offenders, and heavy drug users. The New World Order doesn't need that shit.
Global incarcerated population is about ten million, even including those in for drug crimes. Drop in the bucket.
I would also kill leaders of nations and millitaries that are corrupt and who commit war crimes and other crimes against humanity, and install more democratic governments in their wake.
This is a few tens of thousands at most, and as many transitional governments have found following wars or revolutions, oftentimes certain members of the old regime were the only ones in the country who had the skills and knowledge necessary to keep the lights on, the trains running, the crops growing, and the streets safe. Also lol at a guy fantasizing about being emperor of mankind and murdering billions while moralizing about how he would kill the evil undemocratic leaders who commit crimes against humanity.
And this is the most popular Scientific and Logical plan to reduce humanity by a half. Well done reddit.
