Do you have any source that gives more detail about a post of "editorial cartoon" being deleted? That does seem an odd example.

Editorial cartoons are a pretty fundamental part of journalism. What if Tony Blair could delete news of the world editorial cartoons?

Seems to cross a line and, all due respect, until I saw proof that a delete happened, I'd be more likely to believe it was a histrionic "just-so-story"

I mean, Pao deleting this stuff personally? Even admins doing it?

It doesn't seem reasonable to me.