although observation of the Juneteenth holiday—also known as Freedom Day—dates back to 1866, the story behind the celebration, traditionally observed on the 19th of June, is still unfamiliar to many Americans. On January 1, 1863, after more than two years of Civil War, Abraham Lincoln issued the Emancipation Proclamation, an executive order abolishing slavery in all of the remaining rebellious states. Two and a half years later, the state of Texas was still holding enslaved people in spite of that order. On June 19, 1865, Union army general Gordon Granger arrived with an infantry of 2,000 troops on the island of Galveston, Texas, to enforce the emancipation and set 250,000 enslaved black people free. It’s a tide-turning tale, accompanied by a few myths and misconceptions, but the full story is…