Well, I did wear the armband to Fenway. Many thanks to my wife, without whom this would not actually have happened.
There was a long line for blood donations, so I was there for about two hours. No one said a word to me about it. But I'm guessing some people did notice it, and thought about it.
I heard a chunk of Tom Ashbrook's On Point today, which was a show on Islam in America. It included a good discussion on the diversity of opinions and beliefs among muslims in the US and around the world.