The Redskins name pales in comparison when we consider other possibly offensive sports names. As an example, take the Fighting Irish of Notre Dame. That name immediately brings to mind a bunch of drunk, Irish Catholics who do nothing but bare-knuckle fight.
Let's not forget the Ragin Cajuns of Louisiana-Lafayette University. While the mascot is a chilli pepper, the term Ragin Cajun makes one think of an enraged Cajun who has a short fuse and flies off the handle at a moment's notice.
If I were Irish-Catholic or Cajun, I'd have a far better case upon which to take offense than Native Americans do towards the term "Redskins". Certainly not all Cajuns fit that mold.