It's no secret that NASCAR has a shaky reputation when it comes to the issue of racism within its ranks and elements of its fan base. And in a powerful message to both the sport and the world, Richard Petty Motorsports driver Darrell “Bubba” Wallace Jr.—the only Black driver in the sport's top-level Cup Series—will don a Black Lives Matter livery on the No. 43 Chevrolet for tomorrow's race at Martinsville Speedway in Virginia.