John Lennon, antiwar crusader: With final song, why he (and the Beatles) still matter

Artificial intelligence has brought the vocals of legendary performer and antiwar activist John Lennon back with the Beatles for "Now and Then."

"You say you want a revolution, well you know, we all want to change the world… But when you talk about destruction, don’t you know that you can count me out, in?"He held weeklong bed-ins for peace with Yoko, in Amsterdam and Montreal. In his signature song "Imagine," he challenged the world to move past war: Howard Kurtz is the host of FOX News Channel's MediaBuzz (Sundays 11 a.m.-12 p.m. ET). Based in Washington, D.C., he joined the network in July 2013 and regularly appears on Special Report with Bret Baier and other programs.

"Imagine there's no countries, it isn't hard to do. Nothing to kill or die for, and no religion too. Imagine all the people, livin’ life in peace." And of course, he wrote "Give Peace a Chance."

Paul McCartney had political views, but he rarely interjected them into songs, and very subtle – "Blackbird," for instance, was an allegory about America’s civil rights struggles.I bring this up, as you probably know, because the last Beatles song is being released today, based on Lennon’s lyrics and piano.