Looks like you and your son will have to take an active role in your safety since the PC government simply WILL NOT do it. Watch the Arabs like a hawk. Don't even try to conceal it. If they start something like that on you flight, go and search the lavatory (bring latex gloves).
If you find something unusual, take it to the flight attendant (discretely) IMMEDIATELY.
perhaps videocams in bathroom? I don't suggest anyone go "get things" out of bathrooms that look suspicious. this story sounds hinky to me.