By a vote of 415-14 in the House, with unanimous support in the Senate, Juneteenth, June 19, which commemorates the day in 1865 when news of Abraham Lincoln's Emancipation Proclamation reached Texas, has been declared a federal holiday. It is to be called Juneteenth Independence Day. Prediction: This will become yet another source of societal division as many Black folks celebrate their special Independence Day, and the rest of America continues to celebrate July 4 as Independence Day two weeks later. Why the pessimism? Consider. Days before Congress acted, the Randolph, New Jersey, board of education voted to change Columbus...