On Overpopulation: A Permanent Solution

"They will have you in now, sir.", called the secretary.
An unusually tall man dressed in a blue pinstripe suit and red undershirt glided across the room to the door. The door opened slightly before he got there revealing a large chamber. It was lavishly decorated with statues and pillars in an Ancient R sort of fashion. At the far end of the room was a raised table, at which sat five wizened looking men. They all wore suits of the most expensive make and had an air of dignity about them that was somehow not compromised by their obvious distress of the tall gentleman actually being there.
"Good evening.", said the tall man, in a cool, smooth voice.
"I am here with another proposition for you,", he stated, "as you know I have been doing research as to how we should go about cleansing your world of all harmful habits."
"And what have you come up with?", asked one of the council members.
"I have found that, even though I have already cured your world of disease and done my best to help culture your produce, you still will have a troubled planet under your leadership."
"And why is that?", asked another of the council.
"The problem lies within the fact that there are simply too many of you humans. It is leading to this famine you are experiencing, which in turn is causing your wars. That is not to mention that you are now using five hundred percent more energy than the Earth is capable of giving without wearing down. I reckon that a little over half of the population needs to be eliminated. I have it in my power to do this quietly by tomorrow at twelve o' clock. It is your choice though. I am here only to help to ensure your successful rule."
"Let us think on this, we will have a vote and then call you back in."
The gentleman obligingly left, turning out with a bow until he was summoned back to the chamber after a short but volatile meeting of the council. They decreed, by a majority vote of four to one, that he should proceed with his plan and to make sure it was done quietly. By twelve o' clock the next day, every woman and girl was dead.