How has Algeria experienced Islamism compared with other North African countries? We have nothing in common with other North African countries in that way. Beginning in the late 1980s we had more than a decade of extreme terror. Assassinations of artists and intellectuals by extremists. When the "Arab spring" came, the Algerians observed from the sidelines - we didn't want to relive [the instabilty].But now Algerian society has become increasingly Islamic - with women in hijab, new Islamic parties and a new religiosity.

After the war of independence - could this be another form of divide and conquer? In the film, many people say that [Wahabism] was brought in from outside, and many complain about the influence of Wahabists from the Gulf.

It is foreign to traditional Algerian Islam, especially to the Sufis in the south, in the Sahara, who speak against fitna and extremism in the film.

Does this new strain of Wahabism objectify women in a way that traditional Algerian Islam does not?

Well I give the floor to the Algerian women in the film, who say it has become worse with the advent of this new extremism.

I started to research this kind of video on the internet and realised it was just the tip of the iceberg.

I saw dozens like it, that preyed on vulnerable young people in this country. It was terrible - not like in Iraq or Syria - but we lived with terrorism every day. After negotiations between the Algerian army and the terrorists, the violence came to an end.

As the psychiatrist says in the film, many people were indoctrinated by extremism at school.

In the 1970s and 1980s during the postcolonial era of "Arabisation", many teachers came from Egypt and many of them were influenced by the Muslim Brotherhood.

In the film, the activist Fethi Ghares talks about Islamism as a tool of the state to impose tyranny - a way to make youth fatalist so they accept oppression - saying 'don't look at our palaces and our wealth and question it - think only of paradise'.

He also says that the new extremism is different than traditional religion in that it removes morality from religion, and that political power in Algeria has not permitted critical thinking - creating a society that is intellectually poor.

Veteran Algerian film maker Merzak Allouache won the festival's prestigious top prize, the FIPA d'Or for Tahqiq fel djenna ["Investigating Paradise"] Part road-movie and part documentary, the film's journalist protagonist, Nedjma (played by Salima Abada), travels through Algeria armed only with a video of a Wahabist preacher who promises would-be jihadists 72 virgins.