We're talking about David Leaf and John Scheinfeld's 2006 documentary on John Lennon's activism, with its dizzying array of intellectual heavyweight talking heads. Of course, you've got your Yoko Onos and your Elliots Mintz, but all of a sudden: Angela Davis! Bobby Seale! Noam Chomsky! Gore Vidal!
There's a lot to unpack here, from how it doesn't shy away from showing John's naivety, to the value of pop stars using slogans to promote political causes, and whether you should expect them to contribute more than a catchy chorus.
Watch the trailer: