Islam only permits fighting in self defense: https://www.mpgh.net/forum/showthread.php?t=841011

But for the sake of the argument lets just say Islam does teach to kill all non-muslims for no reason. Even if it does teach that, if a person goes and kills someone, the person is obviously still to blame not what he read.

It is like someone committing a murder and then saying it wasn't my fault because I was told to do it in a book. Do you think the judge in court will say, "that's fine then you are not guilty and it was the books fault?"

Use your brain guys.