Dude, it's not racism, it's just the way things are. If you lined up 100 black atheletes and 100 white atheletes to race each other, who do you think would win the majority of the time? Look at the olympic sprinters in the 100 and 200 meter final, they're all black atheletes. It's not being racist to say that people underestimate how fast Brian Hartline is because he's white, it's simply playing the odds, and the odds are most white athletes can't run the way Brian Hartline does.
The only thing that kind of bothers me about the whole Brian Hartline thing is when they compare him to a receiver, it's always a white receiver; Jordy Nelson. Why can't he be compared to another productive receiver in the NFL, regardless of color? But, even that I understand because Jordy Nelson is also a white receiver who people underestimate his athleticism because of his race. Black and white athletes are different, that's just it, but to say pointing it out is racist, I don't agree.