Objectively, there's no denying that today Islamic extremism poses more of a threat than other types of religious fanaticism. There are complex historical, social, and cultural reasons for this. But this is not a matter of the text of the Qur'an being inherently more susceptible to intolerant interpretations than the Bible.
It's not so much that religion makes people do evil, it's that it provides a convenient excuse for nearly anything, and that lowers the bar for committing bad behavior we might otherwise avoid. It's time for non-theist and faithful progressives to unite and stop giving the conservative religion a free pass for prejudice.