It's partly a lose-lose situation though, let's face it, there are highly publicised areas of Muslim society that represent themselves as Muslim first and their country of origin comes second, and willingly pass on an image of a massive united Muslim nation to further their cause.
Now, that may or may not be a misrepresentation, it more than likely is, some sects of Islam, for example, in Turkey, are nothing like the sects in, say, Iran.
I suppose if you pick up a big hammer and wave it around, you'll be known as 'The man with the Big Hammer.', it's just human nature to label things like that, it's not exactly fair, but it is a natural way to think, and you always remember the most outspoken person or event (which is why a lot of peoples' perception of Muslims is based on incorrect information).