"I took an oath to defend my country"

And now you're literally trying to burn it down.

"And then when I got to Vietnam, we committed atrocities".

If you committed atrocities, that's on you buds. Familiarize yourself with the Nuremberg principles, in particular, #4.

Is there a lower form of life on the earth than someone who swears to defend their country, and then joins the leftists who seek to destroy it? I don't think there is. There's nothing lower than a traitor.