The anti-Biden chants came during Brown’s post-race interview. After Brown told a reporter his victory was a "dream come true," the crowd began to loudly shout in unison their displeasure with the president.
The reporter acknowledged the chants and claimed the fans were shouting, "Let’s go, Brandon!"
NASCAR initially posted video of the interview with the chant but later deleted the tweet.
Fox News reached out to NASCAR to ask why the post was taken down but did not immediately receive a response.
NASCAR officials called the race with five laps remaining in the scheduled 113-lap race at the 2.66-mile speedway due to poor visibility. Brown was declared the race leader as a final caution flag flew with 11 laps remaining. Brown defeated playoff driver Brandon Jones in the last scoring loop.
"Dad, we did it, let’s go!" Brown yelled to the camera during the interview.
The "F--- Joe Biden" chant has surfaced at sporting events across the United States – mainly in southern states – and has been especially popular at college football games where tens of thousands of fans have been packing stadiums in defiance of the Biden administration’s strict coronavirus guidelines.