Could you suggest/improve my thesis statement?

I like the sound of it but considering that it will be read by a tutor (i'm guessing it's an ignment), there seems to be a lot of information in one sentence. I would introduce each area at a time and discuss, so introduce the symbolism as a seperate area then discuss it, then do the same for the technical codes, historical refference, special effects, undermining patriotism and finally human nature. You can drag a lot out of it that way which means more marks. Unless this is an overall introduction and you then delve into each section anyway.