From Arlo Guthrie's 1967 anti-draft song Alice's Restaurant, in which the protagonist is evaluated by a military psychiatrist and tries to get rejected on the basis of being a violent bloodthirsty maniac: https://www.youtube.com/watch?v=m57gzA2JCcM&t=519

And I went up there, I said, "Shrink, I want to kill. I mean, I wanna, I wanna kill. Kill. I wanna, I wanna see, I wanna see blood and gore and guts and veins in my teeth. Eat dead burnt bodies. I mean kill, Kill, KILL, KILL."

And I started jumpin up and down yelling, "KILL, KILL," and he started jumpin up and down with me and we was both jumping up and down yelling, "KILL, KILL."

And the sargent came over, pinned a medal on me, sent me down the hall, said, "You're our boy."

It's always been a death cult nation