A well-known Black Lives Matter activist allegedly ruined a fellow University of Virginia student’s reputation, accusing her of referring to George Floyd protesters as “speed bumps” and threatening to run them over — only to later admit she may have “misheard” the offending comments, according to a report. UVA student Zyahna Bryant, then 19, was already a high-profile activist when she encountered fellow student Morgan Bettinger at the July 2020 protest. What happened next sparked a social media hate campaign in which Bettinger was denounced as a “Nazi;” school investigations; and a bid by Bryant to have Bettinger expelled, according...