Your argument is not making sense. Let's turn this around slightly.
America has over 10,000 people killed each year. That is a very high number and someone bigoted could use that against an American living or visiting abroad in bigoted manner. And you'd have every right to complain.
I fail to see why a muslim can't complain about bigotry that they've genuinely been subjected to, and why doing to so means they are legitimizing violence. Muslims are not a monolithic group -- it's not an "us vs. them" situation. There's no "them" in muslims. Muslims, like any other group, are individuals, each with their own different belief and different take on life. Most muslims have nothing to do with violence being perpetrated in the name of their religion and its not their responsibility to try and fix this. Muslims have a remote, vague and unintentional association with the terrorists. The responsibility lies on those that intentionally and knowingly created these groups to do dirty work, such as topple Assad.
An individual must be judged based on their actions. An individual who has had nothing to do with this situation, and ends up being target of bigotry simply because of their religious belief is completely entitled to complain about it.
Why an average muslim then can't complain about genuine bigotry, as long as they're not making the story up, is something that you are unable to soundly argue for. It's not an either-or situation, where either you're a muslim either against terrorist or if you complain about bigotry then you sympathize with errorist.
