The Vermont State Police door emblem, specifically those in 2008 and 2009, were crafted by prison inmates, and featured – for generations – a cow, an evergreen tree, the mountains Camel’s Hump and Mount Mansfield, Lake Champlain, and three piles of something (either haystacks or some unidentifiable creature, depending on who you ask).

But in 2008, an incarcerated artist at the Northwest State Correctional Facility in Swanton, Vermont, snuck something subliminal into the logo: one of the cow’s spots was altered into the profile of a pig, the derogatory term for police officer. The VSP ordered about 60 of the decals, which made it onto cruisers and weren’t discovered until 2012.