[You, quoting Ebert]
We reflect that the majority of Muslims do not approve of the behavior of Islamic terrorists,....
....most polls of Muslims (no matter where they are) show that Islamists overwhelmingly sympathize with terrorists.... Even granting Roger Ebert the favor of a distinction between "Islamists" and "Muslims", and surveying the larger group, I think you may still be right, if you're talking about worldwide Islam, and I suspect Roger's assertion is just wrong.
AND YOU WOULD BE RIGHT. Roger is one of those liberals who thinks of Islam as an exotice form of Unitarianism rather than a religion that has been at war with Europeans for a thousand years or more.