To be fair, I believe both points can be true. Islam attracts mentally ill young men as garbage attracts flies. And Satan is more then happy to use Islam to destroy as many lives as possible.
So oddly, I find myself in agreement with the lefty newscasters. Yes they are mentally ill young men. Just don't leave out the last part - Islam uses and abuses the mentally ill.
It is ISLAM....period. And inbreeding is common.