It's funny when people say that it's not Islam itself that makes people do bad things: it's that bad people choose the bad parts of Islam to do bad things (or who make the good parts bad).
The good people, of course, choose the good parts of Islam and even make the bad parts good.
Is that taken as a given? Is the statement
"There is no bad religion. There are only bad people."
true by definition (or analytic)?
Of course it's not! People believe it on faith. There is, therefore, faith within religion and faith about all religions. (At least in the Church of Interfaith.)
This is silly because it can also be applied to Nazism, communism and even the theology of Pol Pot.
I'm more than happy to admit that there were some positive aspects to Nazism (heath care, the autobahns, animal rights, etc.) and communism (health care, etc.); though the overall impact was very negative and genocidal.
In addition, the general totalitarian and warlike nature of Islam - as well as of Nazism and communism - negates all the positive aspects.