NBC NASCAR reporter Kelli Stavast is either hard of hearing, or a very, very quick thinker. While interviewing driver Brandon Brown on Saturday at Talladega Superspeedway in Alabama after he won his first NASCAR Xfinity Series race, Stavast had to deal with an unruly crowd. The racing fans, sensing the live cameras, broke into what’s fast becoming a popular chant at college football games in the south and midwest. The populist commentary involves President Joe Biden. Stavast bravely soldiered on despite the obvious disruption. As an emotional Brown struggled to be heard above the crowd’s din, she interjected. “As you...