>You mean governments are able to pay poor men to sign up for wars?

The Viet Cong were able to pay those poor men too, but the vast majority of them chose to fight for and to be paid by the south.

>If your assertion was true, then how evil must the US truly be to allow hundred of thousands of soldiers to be murdered?

They were evil enough to allow tens to hundreds of thousands of south Vietnamese to be subject to torture and starvation in concentration camps.