So let me get this straight. Passengers cheering in pride for their country is a threat? It sounds more like China Air than American Airlines. Perhaps the flight crew should look at the paint scheme on the tail, just to remind them of what country they are in.
Also, the people that stormed the Capitol were Antifa rioters. They were already there before the Trump supporters walked there.
I think "using their phones" means for texting, playing games, or using the calculator app. I had a frozen IFE screen once and I asked the FA if she could reset it and she did within just a few minutes.