And then you can use them as hand- and footholds to climb the pole toward the light. Perfection!
I was thinking the same thing. But I also think covering them with something less profane might be more effective. I’m with @Mister44 . I’d get awful tired of seeing “Shut the fuck up” everywhere, no matter what it’s covering.
For this “be the light” campaign, something like a picture of Batman, and “I AM the Darkness” would be more amusing IMO.