What this is about is their own insecurities at not getting their own way, rather than anything to do with true civil liberties. If it was to do with civil liberties then they would talk of written constitutions and agree with the Human Rights Act - yet from my experience, most of them are anti-social brats just concerned about the freedom to do what they want - moaning about speed cameras that save lives, CCTV that catches criminals, arguing in favour of legalising guns or smoking indoors - things that needlessly kill people and the so called 'traditional freedom' to kill foxes, and most of all the indignity of having to pay income taxes that help the poor, that really gets their goat! All these things affect their middle class freedom to drive fast, get drunk and disorderly, enjoy 'blood sports' and let 'stupid poor people' kill themselves. "Everyone knows, only working class people should be punished for breaking the law, cameras are too fair catching rich and poor alike, my daddy knows the local bobbies - they will let me off because I'm a law abiding rich person when I break the law".
But these extremists like the 'anti-choice on abortionists', can do a lot of harm and use people's natural cynicism and fears to present an argument that on the surface looks 'reasonable' but quickly descends into farce when the real facts are examined.
It is of course impossible to argue against someone who talks about what 'could' happen in the future. Society is full of exceptional examples where the law is applied absurdly or over-zealously, so of course there will always be examples of wrongdoing by the state - but these people quickly have to backtrack when their claims of 'Nazi-state' are investigated- there is just not the evidence to back it up so they talk of 'future potential' just like the anti-abortionists.
People can still protest where they like - and even on the odd occasion where someone gets an £80 fine or a night in a cell - it is not on the same planet as people being bumped off or disappearing in the night - these same people are free to protest a day later and usually do. Even recent British history suggests the state is more benign and open to criticism than it ever was. There has never been such a level of hysterical criticism of a government than the criticism levelled at this Labour government, yet there is no internment or sus laws, no poll tax riots or brutalised trade unionists like there were under the Tories. Minorities and others have freedoms they would never even of dreamt of having in even the recent past.
What this pathetic film and it's cult followers do is belittle the true achievements that have been made and make it more likely we will get a Tory government that will really take our liberties away again like they have done many times in the past.