To me it is the Greatest Conservative song ever. The Commie Left panned it at the time, and Lennon shreaded them. Toward the end he renounced Imagine, and began to like Reagan. This song goes great with Taxman.
John also became a Christian in his last days per his diaries. Was taking his little son to Sunday School, too. He began to waver under Yoko and left friends pressure and ridicule.