जॉन लेन्नों एंड Peace

In the film John Lennon Vs. the U.S. Government I notice that there was no mention of peace protesters or John Lennon calling on citizens to enforce the U.N. Charter.

I note he did make the songs Give Peace a Chance and War is Over.

I would understand why peace protesters would not wish to call for U.S. citizens to enforce the U.N. Charter becuse it would mean a U.N. war with the U.S.A.

I also wonder why John Lennon did not sing of every one joining the U.N. Peace corps instead of the army,the navy,air force, or marines.

U.N. Peace keeping missions could also have been an option.