So, to answer your question about whether a fact can be racist:
Someone else said it and they are right - the *use* of a fact can be racist.
Example:
There is a man, call him BLACK_FACT_BOT. He enters conversations about race, history, etc. And then all he does is state facts about the pitiable conditions of black slaves in America in the 19th century. People ask him to stop, ask him questions about it, he just responds with more of these facts. It would go something like this:
REGULAR GUY: So anyway, I was just wanting to know what your opinion of the whole Trayvon Martin thing is?
BLACK_FACT_BOT: In the southern US in the 1840s, black slave women were chosen at will by their slave owners and repeatedly used as objects of sexual gratification.
GUY: I'm not sure what that really has to do with this?
BLACK_FACT_BOT: Marriages between slaves were not recognized and thus it was not considered rape or adultery for a white master to use his female slaves as sex slaves. In fact, it was considered normal and proper.
GUY: This has nothing to do with the conversation and is making me frankly a bit uncomfortable.
BLACK_FACT_BOT: After the Civil War, the Ku Klux Klan hunted black men suspected of rape and other crimes and lynched them, often by cutting off their fingers, splaying their internal organs, and hanging them from trees.
GUY: Okay this is too much. You need to stop.
BLACK_FACT_BOT: In West Africa in the 1880s, entire kingdoms of black people were overrun by white soldiers with advanced firearms. The treasures from these palaces were taken systematically and sent back to Europe, where many of the relics and objects rest today in museums.
Do you see how this can become racist?
It begins to beg the question - why is this person saying this fact?
In Dawkins' case, the implication is pretty clear - Muslims are stupid.
Of course Islam is not a race, but the sentiment is similar to racism, in that it is bigoted.
It also conveniently ignores some other facts, such as the fact that the Nobel Prize had not been invented when Muslims were making some of the most significant scientific and mathematic advances on which Cambridge's intellectual foundations were built in the 16th and 17th centuries.