The French Resistance was acting like this even _after_ the liberation:
<blockquote>'The French Résistance and the Chambery Incident of June 1945' is a case study of this mutation of public morality. When the French Government attempted to transfer a trainload of Spanish refugees across French territory, facilitating their passage from Central Europe to Iberia, local elements of the Résistance decided to block the passage of the train. Accustomed to taking the law into their own hands, they dealt with this issue in tried and true fashion, even though the war was now over and even though 'republican legality' had supposedly been restored. With the complicity of trainmen in the SNCF, the résistants succeeded in stranding the convoy at Chambery, where a mass demonstration against the Spaniards quickly deteriorated into a riot and the train was sacked. The demonstrators believed, not without reason, that scattered amongst the refugees were veterans of the infamous 'Blue Division,' which had fought for the Germans on the Eastern Front, and that pro-German French collaborators were also hidden amongst the Spaniards. ( Perry Biddiscombe, "The French Résistance and the Chambery Incident of June 1945," French History 11.4, Dec. 1997, <http://www.le.ac.uk/hi/bon/resources/FRENCH_HIST/Abstracts/Abs167.html>)</blockquote>
<blockquote>[T]he punishment of those who had collaborated with the Nazis began immediately after liberation of occupied territories. French Resistance forces summarily executed, after cursory trials, about 10,000 accused collaborators as a part of "justice at the cross-roads." (Euna Lhee, "Changing Memories of French Collaboration and Resistance in World War II: A Film Analysis," <http://www.jhu.edu/hurj/Issue3/research-lhee.html>)</blockquote>
You can imagine how they acted toward collaborators under the occupation. Let's not romanticize the past.
Moreover, let it be said that the French Resistance was not all that effective -- they couldn't liberate their country on their own. For examples of successful anti-fascist, anti-imperialist, and other movements that achieved their objectives, having defeated their political opponents who claimed to stand "on the same side" but actually attacked them more than the occupiers, you might look at China, Yugoslavia, etc.
One hopes that the Mahdi Army, et al. will also eventually grow into a national front that can defeat Qaeda types and liberate their country from the occupier. -- Yoshie <http://montages.blogspot.com/> <http://mrzine.org> <http://monthlyreview.org/>