I tend to jot down moments, lines, interactions that don't really make any sense. I try and explain these scattered notes to my close friends, and they become more and more logical. I see screenwriting as a bit like a math equation which I have to solve.
There are those who simply want to live their lives, and feel they cannot live the way they want to in Iran. Others are ideologically motivated: They will stay no matter what and try to change things.
Unless you're trying to make a movie on the sly, there's no way to get around this. If you want to use public spaces, film on the streets, have the cooperation of the police, you have to have a permit.