"if I were an American who loved his country I'd be inclined to see it as a worrying wake-up call. "
There are plenty of wake up calls and there is plenty of outcry. This incident does not automatically fit in that catagory until all the facts are discovered. It is certainly not something to forget, but before passing judgement there are questions that are awaiting answers.


"However life was made very difficult for these visitors, without a need for trying. "
Well, I am not sure if that is a true statement. Granted they had a strong reaction to the circumstances, but your commment makes an assumption. Was it their treatment or their reaction to the circumstances that is the issue?   We know that they were photographed, given a medical inspection,and spent the night and part of a day inside a group care home. Contrary to your OPINION, we do not know all the facts and should not rush to judgement.

I am sure that there routines in your country that I would consider barbaric and and inhumane and and would be appalled at being subjecte to. Without understanding the facts and the culture, a similar reaction could occur.   

For all you know, this exact scenario could take place to an American family visiting your country. Other than making assumptions, there is no proof without asking questions.