A Reddit user made the observation.
I just went through the LAX security line with Marilyn Manson. He had 'FUCK' scrawled in large letters across the bottom half of his face, with what appeared to be a grease pencil.
Was Manson saying "fuck you" to his fans? To TSA agents? To the stingy airline policy that means you have to pay for snacks now?
Nope, Manson was sticking it to the paparazzi, who surely hound him at every turn.
As we each removed our boots in the security line, he kindly explained that it was not directed at me or anyone else in the airport, but rather at the paparazzi, so that they couldn't sell any photos of him that they took.
What gall. Unfortunately for Manson, the four-letter word doesn't have the envelope-pushing power it once did. Plenty of paparazzi photos were taken and sold.
Of course, a truly cynical person might suggest that Manson really wanted his plan to backfire, and that he was trying to draw more attention to himself by writing "FUCK YOU" on his face. But no, let's go with his far nobler explanation.
Keep fighting that good fight, Marilyn.