“He could could explain the the Stars and Bars commemorates his ancestors who were stripped of their rights and property because that they lived on the wrong side of the Mason-Dixon Line.
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That would also be the US flag where the North held slaves during the entire time of the Civil War. Lincoln’s emancipation proclamation didnt free a single slave held by the northern states. Slaves were not free in the US until the 13th amendment. Sorry you learned your false history in public schools.