From this limited viewpoint, we don't know if the event even bothered the kids. Plenty of things are shrugged off until casually recounted to a parent, who tells them just how outraged they should really be. 

If being singled out for their race really did bother them, how is a repeated retelling in the press going to do anything but make it worse? This line of action seems to be more about punishing a coach than anything else. 

Maybe I'm inclined to look past it since the vast majority of my coaches were jerks on a regular basis. It seems to be the personality type. Others, I expect, will say propose that I'm just another white man who doesn't get it. Could be.