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.
“I did a play called 'On Golden Pond' in a dinner theater in Maine and then went to New York for a talent competition having put together a three-man juggling routine and some one-liners and I got myself an agent from that.”