THAT is a bad argument I see time and time again. Just because you play a kid's game for employment is not an excuse to do whatever you want.
A kid's game? Putting your body on the line everyday is a kid's game? Poor way to try and debunk an argument.
Whether you want to admit it or not, the NFL is not, and never will be your average workplace. It's basis is violence, pure and simple. To tell a guy he has to violently crash into another human being, but make sure he doesn't say any meansie words is ridiculous.
Don't get me wrong, I don't condone racial slurs, but by making this rule, the NFL is opening another can of worms to a league that has already had too many regulations put on it recently. The NFL is being ruined by these yearly rule additions, when frankly, it wasn't broken to begin with.