Oh the irony!
The fine-print is strong with this song! Let's observe...
Stand up all victims of oppression, for the tyrants fear your might -- As evidenced by all the uprisings that happened during the Lenin years and the Tienanmen Square massacre!
"Don't cling so hard to your possessions," -- For the state forbids private ownership!
"Let racist ignorance be ended..." -- Didn't stop Marx, Engels, and Che and their prejudices toward Blacks and Jews! (Notice that I left out Stalin and his Doctor's Plot! Done because some socialists want to distance themselves from him!)