Violent! , not peaceful
Islamic militants do not represent mainstream Islam.
I smell a flamewar
Islam in and of itself is quite peaceful. However, when the term jihad (struggle) is misinterpreted as a holy war against non-believers, you get terrorist twats like ISIS and Al-Quaeda.
Yes islam is peaceful. But there is 2% of them that are extremeists. We just tend to focus on the bad, not the good.
None of the Abrahamic religions are peaceful by any means, this becomes clear by reading their holy books for yourself and seeing the violence they preach and advocate.
There is no peaceful religion in the line of faiths passed down by Abraham.
Actually Islam is a very violent religion. They literally believe that in order for their messiah to come to Earth they must kill or convert all infidels. This is not "radicalized" muslims, this is actually what they believe.
Whether religion is violent in scripture or not, it's followers have waged wars throughout history proving that it is just the same as current religions and those that have been abolished. This religion is not peaceful in its entirety, so yes it is violent.