Clearly you have missed this thread...
http://www.military-quotes.com/forum/british-soldier-killed-muslim-terrorists-t103141.html
As for the questions I would suggest that most of the public views the act with the derision/disgust that it deserves but for most of us outside Britain it is already "old news" because it has little to do with us, just another sad event in world full of them.
Has it changed our opinions about Muslims here, I don't think so because New Zealand does not really identify a person by their religion hell I can't tell you what religion my neighbours are nor even the most popular one in the town I live simply because it is not something we focus on.