It's not a matter of people being deceived by a book, it's more that we're hard-wired to believe things like religion. People feel a need to be "right", or to believe that they're good while others are evil. One would argue that that's because God made us that way, another would argue that we evolved that way.
That people are persecuted for carrying the book is a criticism of faith itself. If you have absolute faith that a specific viewpoint is unerringly correct, then other viewpoints have to be excluded. Christianity has done it's share of persecuting in the past. Even the Bible itself has many examples of atrocities carried out against unbelievers simply as a result of unbelief. Today most Christians would be very much against burning witches at the stake or going to war under the guise of converting the lost, but some would argue that's simply because they've had to update their values to match the modern world.
People dedicate their lives to helping others regardless of what religion they subscribe to, so that's not an argument for or against Christianity. Same thing as helping people change their lives, that doesn't happen exclusive to Christianity.
It doesn't matter what the subject is, a fallacy is a fallacy.
There's no doubt Christianity has changed many lives in 2000+ years, I'm just not convinced it's been for the better. How many innocent people have lost their lives due to faith in a book? Even today while it's claimed faith improves people's lives and secularism is bad, the reality is that the more a population professes to be based on faith the dysfunctional that population is.
http://moses.creighton.edu/JRS/2005/2005-11.html
http://www.skeptic.com/the_magazine/...healthier.html
Religious democracies experience higher rates of homicide, suicide, low life expectancy, STD infection, abortion, early pregnancy, and high childhood mortality (under five-years old).
There's quite a few good books along these lines. Sam Harris' The End of Faith is an interesting read, while I think he takes an extreme line much of the time, it is interesting to see that perspective.