Kyle Rittenhouse, who rose to notoriety after killing two people and wounding a third with his AR-15 during riots in Kenosha, Wisconsin, in the summer of 2020, fled the stage during an appearance at the University of Memphis Wednesday as Black Lives Matter protesters stormed the event. Video shows Rittenhouse, 21, rushing off the stage after protesters, some of whom were carrying signs that read “put Rittenhouse behind bars not a podium” and “no killers on my campus,” started booing loudly, The New York Post reported. A jury foundRittenhouse not guilty on all counts in his murder trial after h…