Nice thread, and I think that Ophelia's own comments as the thread goes on are especially apposite. We do have to distinguish ourselves from opportunistic racists or quasi-racists ... and it can indeed sometimes be difficult to tell the difference between those people and people who have legitimate criticisms of Islam or of cultural practices associated with it. None of this is straightforward. On the other hand, it cuts both ways. People who want to go around accusing others of racism or "Islamophobia" would do well to bear in mind that it's not so easy to be sure that they are dealing with opportunistic racists or quasi-racists, as opposed to people with legitimate and sincere criticisms, etc. In some cases, there will be independent evidence, as with BNP figures. But in other cases there won't be, and a certain reticence about smearing opponents as racists (a very damaging accusation in our society) is in order.
This is why I have no respect for someone like Jeff Sparrow who is reckless about who gets smeared, and seems to be too driven by ideology to understand any of this.