Here is what the ‘clock’ looked like, this is the photo of it. http://www.weaselzippers.us/234507-would-you-think-this-was-a-clock/
And the kids dad is a muslim activist of some sort
According to information at that link, the device “went off” during class. I assume that this means that it started beeping loud enough for people to hear it. I can see why people would freak out.