I learned this in the early 50s, from an English exchange student at the University of Minnesota, who had been an active member of the Labour Party. It's sung to that famous tune which is used by so many songs such as "Maryland, My Maryland" and "O, Tannenbaum" and on and on. "The Party" here is the Communist Party.

A SENTIMENTAL PHILISTINE

A sentimental Philistine
Couldn't toe the Party line.
He wavered first to left and right
Became a bleeding Trotskyite.
And after months of hestitation
And constant right-wing deviation
He took it all so much to heart, he
Went and joined the Labour Party.
The moral of this story's when in
Doubt, consult the works of Lenin!
DRO