We are willing enough to praise freedom when she is safely tucked away in the past and cannot be a nuisance. In the present, amidst dangers whose outcome we cannot foresee, we get nervous about her, and admit censorship.
The worst evil is - and that's the product of censorship - is the self-censorship, because that twists spines, that destroys my character because I have to think something else and say something else, I have to always control myself.
The fact is that censorship always defeats its own purpose, for it creates, in the end, the kind of society that is incapable of exercising real discretion.
By placing discretion in the hands of an official to grant or deny a license, such a statute creates a threat of censorship that by its very existence chills free speech.