These so-called producers are turning out to be even dumber than I thought:

With the revelation that the producers of Expelled did not obtain permission to use a short segment of John Lennon’s song “Imagine”. Given that they reportedly used the snippet about “imagine there’s no religion” with various nasty visual content from Communist China, it seems unlikely that they will manage to work out a deal with Ono to license the song at this point. Premise Media (PM) is arguing that the snippet meets the requirements for a “fair use” exclusion, or that they have an “educational” movie, or whatever in order to set aside the issue.