I think you're entirely missing my point. I'm not going to defend a religion - I'm a committed atheist and I think that all religions are extremely harmful.
However, I think there are two issues being discussed here:
1) Whether or not the OP's statement was racist and misleading, or not. I hold the former position, and you the latter.
2) Whether or not it is the actual religion of Islam that causes terrorism, or whether it is something else. You hold the former, I hold the latter position. To be more specific, I think that it is in the nature of religion to be distorted, which is why it's dangerous. You have to remember that there are countless different translations and versions of the Koran, just like the Bible. This is why some people see it as peaceful, and other's see it as militant. Let's not forget that it was a Christian God who sent a flood to kill almost every living being on the planet, because they were not obeying him.
I also think that America's foreign policy, while not actually horrible, has been utilized by militant extremists to foster anti-Americanism, throwing in Islam because religion is helpful in getting people to throw away their lives. I think the fundamentalists are grossly distoring Islam.
Apparently, the people on the various sides of the issue can't even agree on whether Islam means "peace" or "submission".
So basically, you think it's Islam, I think it's a multitude of factors. But this is essentially a debate that won't work. For every article you show me saying Islam promotes violence, I can show you another saying it promotes pacifism. The amount of misinformation on every side of the argument is so overwhelming that it would take some who did this as their job to really get any answers. I don't have that kind of time.
As for the first issue, I think it was racist and misleading because first of all, almost all Muslims have dark skin and a similar culture. I think race is more than just skin color. Culture, religion, etc. are all important aspects as well. To a lot of Americans, and Europeans too, when people start making lists of atrocities and saying "Muslims did it", while a technically factually correct statement, they're making implications which are highly questionable and dangerous. It's a gross oversimplification of a matter and statements like that cause a lot of people to say "Ya mean he's from Arabia? Must be a sand (*)(*)(*)(*)(*)(*) terrorist, and I hope he dies!"