According to François Fillon, France must "change the paradigm in the struggle against terrorism", particularly in order to take account of the implantation of radical Islam in the very heart of society. He is therefore calling to make its containment a "national priority". "We need to recognise that society is radicalising. A large part of the European population is more and more hostile to Islam and we cannot rule out behaviour driven by passion even irrationality. This could lead to kinds of civil war. Something we absolutely must avoid.Source
Note he blames the hypothetical civil war on Europeans and their irrational, hostile attitude towards Islam. It's nothing to do with irrational, hostile Muslims who, you know, go on mad sprees actually killing Europeans.