Here's one that doesn't crop out the graffiti on the mailbox:
http://cdn1.vox-cdn.com/uploads/chorus_image/image/36894460/...
http://cdn1.vox-cdn.com/uploads/chorus_image/image/36894460/...
But when the reaction of the police to spraying "Fuck the police" on a mailbox is that six of them charge you with rifles aimed at you, that seems like a pretty clear justification of the sentiment.