Antlers, you said it better than I probably can.

GMAFB! Let the young man (who is living with challenges we can't imagine and thank God every day our own children don't face) wear his jacket with the letter and support the school/sport he loves.

I'd be willing to wager that the offspring of the parent that complained about this is a real class act as well. It's a letter jacket. We all have them hanging in our basements or back closets. Big deal at the time, after some life experience, not so much. And by damn, let's make sure none of the varsity lettermen's girlfriends are sporting those jackets around the hallways, they sure as hell didn't earn them in sporting competition.....

Sorry gentlemen, rant over.