Social losers in Islamic countries do not have a way of lashing out at society because they would be imprisoned or killed if they took out their frustrations on the Muslims around them. But when they come to Western nations they have a large population of victims. They can take out their frustrations on the European or American population and still be heroes to many people in their communities. For the first time in their lives they will have fame, and approval.
Social losers in Islamic countries can and do win approval stoning adulterers or throwing effeminate homosexual off of roofs.
So can everybody else.
You nor anyone else are ever going to sell me on the fantasy that Muslims have to come to the west to commit the violence we are seeing.
I lived in Saudi Arabia in the nineties. This violence is natural and pervasive under Islam. It is not the province of some marginalized little sector of Islamic society.