In the workplace, managers will put up with anything posted on a wall, as long as it's published.

Sometimes Dilbert and other cartoons nearly come right out and say managers kill people and have no redeeming value, but since the comics are cut from commercial newspapers, it doesn't seem to be about anything local.

(Similarly, painfully lame bits of propaganda from other parts of the organization are tolerated.)

But if something that looks home-made is put up, and it isn't selling anything, some management folk get very paranoid indeed.

What really gets them is when they realize that something they thought was official is really done by some employee.