Stare into any ideology deep enough, going all the way to the extremes, and you'll find the hateful and violent ideology that exists.
Or if not yet, then you'll see the people that are heading in that direction.
No one is immune to propaganda. Anyone can be radicalized. Understanding that is the first step in protecting yourself from it.
Debbie here has failed in that. She's allowed the propaganda against a religious group (though chances are, said hatred is probably more likely based on race with the *justification* that it's based on religion) to cloud her good sense and encourage her to fall prey to bigotry.
Fact is, majority of Muslims *do* just want to live in peace. They want to stop being attacked on the streets, having their clothing ripped off of them, allowed to make their own choices... and many of them are better at it than Debbie here.
Does that make it a "Religion of Peace"? Probably not. But that doesn't mean its adherents can't be peaceful.