Three former Memphis police officers were found guilty on Thursday of federal witness tampering charges in the fatal beating of Tyre Nichols, a 29-year-old Black man. They were acquitted of the more serious charge of violating his civil rights by causing his death. Emily Cochrane, a New York Times reporter who covers the American South, explains what to know about the verdict. Video by Emily Cochrane, Nikolay Nikolov, Laura Salaberry and Rebecca Suner/The New York Times. #TyreNichols #Memphis