There you have it. Another example of the media's new buzz phrase for terrorist - mentally ill.
The other obfuscation word the media will use for Muslims especially when the story involves riots and mass rape is undefined "youths" did it.
But, there is nothing new, or secret, or even a l surprising about this. They have been teaching and preaching rape, death, and murder, from the very beginning of Islam, and they still do today in all variations of Islam.
There is no such thing as "peaceful Islam". This is a myth created by Western Liberals. But you don't have to take my word for it. Simply listen to what they are saying.