You are right of course and it is goes hand in hand with your post about the writers of history. There is very little way to actually get a 'factual account' even one one is there as personal position and biases will of course play a role. I am more interested in the manipulations that are possible, not just in movies of course but in general narrative changes. 

The reframing of celebrities and politicians to swing opinions is very hard to filter as they are targeted and reinforced across so many levels. It ends up being that my view is the correct view and I can even justify why, even if it is complete nonsense.

I am reminded again of a vampire post I should write...