"dhamilton" has a rather wide definition of what constitutes a political *pop* song ;-)
I originally opted for Lennon's "Gimme Some Truth" with its rage against the machine. But Lennon had rather dubious alternatives to replace The Man. Here is a better choice that perfectly captures the mood of our present parlous state - "Everybody Knows" by the incomparable Leonard Cohen (always preferred him to Dylan). The song was used to great effect in Atom Egoyan's movie "Exotica". Don't miss that one. https://www.youtube.com/watch?v=Lin-a2lTelg https://www.youtube.com/watch?v=Lin-a2lTelg.