Thank you for sharing. Do you happen to know what particular events lyrics refer to? Something around 1964? Edit: found after cursory search https://people.wku.edu/charles.smith/MALVINA/mr073.htm
Yes, that link you posted says some of the info. Additionally, the "shot in Evers' back" refers to the killing of civil rights activist Medgar Evers by a Klansman in 1963. The Klansman went to trial twice but was not convicted, and walked free. (Though was finally convicted in a 1994 retrial.)
And as your link says, "Mr. Charlie" is an old term for referring to condescending/abusive/exploitative white people.
Thank you, once again.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:
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