A good movie to get hold of is "The Battle Of Algiers" a superb re-enactment of many actual events involving a Muslim/Algerian terror organization (with a political arm) and the French led anti-terrorist activities which led to the capture and killing of most of the primary members.

Despite the apparent success of the government, the French left Algeria.

The actions of a minority of terrorists can so polarize a situation that it may lead to mass conflict and possible resettlement, forced or otherwise.