New York (AFP) - With marches, music and speeches, Americans on Saturday celebrated "Juneteenth," the newly declared national holiday that marks the end of slavery and which comes a year after George Floyd's murder sparked anti-racism protests. Hundreds of events were held across the country, from New York to Los Angeles, and most notably in Galveston, Texas, the symbolic heart of the Juneteenth commemoration. For on June 19, 1865, it was in that Texas coastal area that the Union Army -- victorious after the bitterly fought Civil War -- announced to African Americans that, even if some in Texa...