Well, it's a shame that some people are so biased and show such zealotry that they will not condemn what is indefensible (very JW like ... just like they defend the org). Were it American soldiers being mistreated by foreigners then I would be surprised if they weren't calling for war.
Minimus. I think the "american bashing" claim is something that has been learn from the Israelis. Whenever they are criticised FAIRLY for committing illegal and immoral acts they immediately claim people are being "anti-semitic". It is pathetic.
Note above that I was first to condemn the british soldiers doing something similar. It isn't difficult and doesn't show any betrayal of your country. Quite the opposite, if you truly value what your country is supposed to represent then you will want those involved to be dealt with to the maximum extent of the law.
Is it an unimportant matter? I doubt it ... this could lead to ill feeling and the loss of many more American lives and more US troops being injured and disfigured.