The Passion Of The Christ

How could the movie be called historically accurate (or inaccurate)? We have virtually no historical data on what actually happened. Outside of the gospels (whose historical accuracy is questionable), there are NO records of the trial, NO records of the lead-up to it, NO records of the execution...I expect - and believe, from what I've read - that the movie will be accurate as far as being a faithful retelling of the gospel stories; however, just how historically accurate this is, nobody knows.