I enjoyed watching that YouTube clip and I got a sense that Art's right that any marching to this song would be in reaction to the movie...
And please forgive me for my error about the nationality of Manfred Mans. I'm still not sure about who the Moffets are which goes to show you that I'm not hip to British pop music.
So in at least partial penance, I've google the name Manfred Manns and put information about them here.
I found it more difficult to find information about the Moffets, but at least I got the sense that they were {are?} also a pop group from Britain. Yeah, it's probably off topic, but if anyone wants to help a sister get hip to the jive, I'd appreciate it.