I can't even believe I have to say this, but NO, Superman would not be okay with the government asking him to become an executioner...
And how would he kill them exactly?
Beat their skulls in with his fists? Choke the life out of them with his bare hands? Burn their flesh with his heat vision?
Why are we even talking about this!
I think back to my father. As a farmer, he had a natural understanding for the Earth. I remember him telling me this world is capable of providing for all its creatures. Even now, with so many more people, there exists enough food for everyone.
"The problem," Pa used to say, "is people. As far back as we go, we've always had problems with sharing. Seems everyone's too busy holding on to what they've got to care how their neighbors are doing."