French police officer Ahmed Merabet was murdered by Daesh - the Fascist gang that, before its destruction, called itself the "Islamic State". Officer Merabet was himself a Muslim, but - just as with any other Fascist gang - Daesh never actually cared about protecting the people they pretend to represent.
Officer Merabet's death serves as a reminder that we must never allow Fascist groups to obtain political power anywhere in the globe - at its height, Daesh only held small parts of Syria and Iraq, but the mere appearance of political power was enough for the Fascists to brainwash terrorists into attacking targets far from their nominal point of control.