Kevin Levin of Civil War Memory found this on You Tube. Here is what he writes:
Check out this short video of a Civil War centennial parade in Jackson, Mississippi in March 1961. There is no shortage of Confederate flags. It certainly is a wonderful example of how these events rallied white communities at the height of the civil rights movement.
There does appear to be two black individuals in the parade, one pushing a wheelbarrow at the 54 second mark, but I am not sure what to make of it.