Politics and art are nearly inextricably linked. Witness what happened when people did not stand at attention during the playing of the National Anthem.
Context is important, but any song can be politicized. A few examples:
Dolly Parton "9 to 5"
Bruce Springsteen "Born In the USA"
Billie Holiday "Strange Fruit"
The Clash "London Calling"
Duke Ellington "Black, Brown And Beige"
Bob Dylan "Blowing In the Wind"
George Cohan "Yankee Doodle Dandy"
Aretha Franklin "Respect"
Stevie Wonder "Livin' In the City"
The Who "My Generation"
The Band "The Night They Drove Ol' Dixie Down"
Marvin Gaye "Inner City Blues"
Village People "Y.M.C.A."
Jimi Hendrix "Machine Gun"
Rolling Stones "Under Cover Of the Night"
Gang Of Four "Call Me Up"
They even politicized "A Whiter Shade Of Pale".
Clearly, history has shown music and politics cannot be separated. In that case, I agree with Frogman's above comments.