I missed it. Along with most everyone else, since the public evidently wasn't invited until the day of the event. From KETV News' web site: Omaha Muslims Hope Picnic Improves Understanding.
Let's see, a bunch of Mohammedans, no hog roast, no beer, no scantily clad ladies, no advance publicity, and it was held on that most American of holidays, the Independence Day weekend. My understanding is improving already.