Murder of George Floyd
Joe Biden was not president in 2020 when Floyd was killed but he was president in 2021 during the trial of Derek Chauvin.  In April 2021, he said the guilty verdict was a "giant step forward in the march toward justice in America," but "much too rare." Before he became President, Biden had promised to make a police commission for the whole country during his first 100 days as president, but he had not done so as of April 2021.