On topic, fanaticism is a problem in all religions and belief systems. In a society that's well educated and free to choose their paths, I don't think its a problem that will get out of hand. Its part of being a free society. But this proves that fanaticism is not a problem exclusive to Islam.
"All truths are easy to understand once they are discovered; the point is to discover them."
Galileo Galilei (1564-1642)
Galileo Galilei (1564-1642)