Who will live due to the dead and who will die for the living?

We have heard of communists dying unsung.Of course ,there is the infamous Pol Pot whose life had meant death to so many in order to make life for so many .There is confusion in Pol Pot’s existence and death .Who is supposed to live and who will die ? May be , it is in the numbers.Some sons of guns will die so that other sons of guns will live.The smaller number will die so that the bigger number will live. Confusing . When Pol Pot finally called it a life,he must have thought of this .We have no news of those who were supposed to live happily ever after ,now that all those people obstructing their happiness have died :

The skull pot

I sit here on the precipice
With my feet dangling
In the abyss of time
On the far-line I espy
A pile of stacked skulls
Of large circular eyes
With the mountain air
Hissing through them.
These skulls had thoughts,
When their holes were eyes,
That wished no brains in them.
What did the old man think,
When , lying on a string cot,
He saw the smile of death
Where the banyan met the sky.