Who are they?
To paraphrase, white kids who played at Iowa with a podcast who believe the perceived racism is more an issue of "bully culture". They seem to believe the "Iowa Way" is borne in discipline and culture, and that if anything the racial issues were just an unintended consequence of the discipline and culture associated with Iowa football. I'm sure the @Brodie0 's of the world can correct me if I've misstated something, as I'm sure they've listened more than I have.
May be some truth to what they say, but it's hard to ignore the disparity in punishments, drug testing, etc.
They have a podcast you can check out if you want the details.