The ad makes no sense because you cannot see the sprinters’ legs. Without being able to see the legs and the blocks, which is really where it is at with sprinters, it is not immediately apparent what the athletes are doing.
What you so see is the athletes bent over with their hands on the ground. Given no readily apparent reason for them to be doing so, it is not unrealistic to suppose that they are bowing.
And the fact that they are all African American is just icing on the cake.
I totally agree that it is a muddled graphics, but...
Agreeing with the "racist" premise for the sake of argument, the "racist" charge would apply even more, since most of the world-class sprinters are black.