Why my husband couldn't park in front of our building yesterday

This sign, which was posted on every vertical object within one block of the T-intersection at my house, must have been written by either (a) an idiot, or (b) a brilliant guerilla marketing person. Do I really need to know the plot of this (very ridiculous-sounding) movie in order to know why I have to park elsewhere?

Take a look at the street they cleared:

(those tiny dots in the extreme background are the production crew & cast, all contained within about a 100 ft radius)