Also, updating my Cocojams website resulted in the old links to pages coming up as "This page is not found".

Here's the current link to the page on Civil Rights songs:
http://cocojams.com/content/african-american-civil-rights-songs (link broken).

That page includes the words to various songs as well as videos of those songs being sung.

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This page can be seen in facsimile with many of the original links at https://web.archive.org/web/20120222091553/http://cocojams.com/content/african-american-civil-rights-songs

This is via the Internet Archive's "Wayback Machine."