If you don't know what Fitna is or what it is about this
article by Ash has a very fair description.
This article has a nice message about Freedom of Expression and threats of intimidation.
In the meantime, three questions need to be asked about the film, which anyone can find by googling "wilders" and "fitna". The first is "Should Mr Wilders be murdered for making it?" That's what some demonstrators outside the Dutch embassy in Indonesia called for, waving banners saying "Kill Geert Wilders". Theirs is an attitude that the British writer Douglas Murray has sharply characterised as "say my religion is peaceful or I will kill you". More seriously, even before the movie was released, al-Qaida issued a fatwa calling Muslims everywhere to assassinate Wilders, thus further increasing the threat to a man who is already under 24-hour protection.
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This is how a mature free society responds to such a film. Not by appeasement of murderers, not by censorship, and not simply by blanket condemnation. Let the majority ignore it - as they seem to have done so far, and heaven knows there are better things to do with your time - and let a minority of those interested engage with it (for my sins, I've watched it three times), take it apart, argue with it, reveal its game, refute the refutable and accept the irrefutable, separating those specks of truth from the fat turds of falsehood.