I believe the author maybe trying to pinpoint how people are in denial as to how their faith maybe used to bring about evil and oppression and instead are trying to blame those who question them.
If anyone is to suggest that what a majority of adherents of a faith are upon maybe not the truth they believe it is, but a distorted message, then they stand a chance of being ostracized and called horrible names not to mention be warned against and maybe even worse.
This is something many of us may have already faced. I know I have. Where when you try to show people the difference between the real message of Islam and what people have made it into, they abuse you and call you all kinda names, claiming you have actually been brainwashed by the western media etc or that you are trying to take them away from the beliefs of their fathers. Strangely enough the latter is what the Prophet himself was accused of so how can we expect any better?