Your mission, should you choose to accept it, it to use this time machine to travel to any point in time and assassinate any one person of your choosing to that will save the most lives. This message will self destruct.
Still a lower death toll than capitalism.
You seem to be forgetting that all the "evils of communism" came from the need to modernise those countries, such as with china and russia.
pol pot was a psychopath and not gommunsim.
Also, my vote goes to Edward Bernays.
We would all be infinitely more free had this man never existed.
Saving lives can be a misleading aim.