Don't blame Vietnam and Korea on a rock star, blame them on the people in government, and the military and the voting booths, especially blame the 45 to 65 year old leaders.
I don’t blame Viet Nam on him, I am only saying that when the USA unilaterally acquiesced to the leftist movement for which he was an advocate, it resulted in wanton slaughter.
I think his point was to show that the Communist Utopia Lennon hoped for would not work and was not good for the people living under it - not that Lennon caused it.