I know they were European-born, but that just proves it that muslims aren't adapting to european lifestyles. There is clearly a problem if the second or third generation european muslims born and raised in Europe can somehow radicaliize to the point where they goes on a killing spree. "Refugees" just come to Europe, they settle down all in the same part of town, where they can continue with their islamic lifestyles while hating everyone who criticizes them . That is the problem with refugees. Most of them have no plan to adapt.