Who is trying to take advantage of an apparent typo by Mike Pence.
He posted this on Twitter. Innocuous photo of a cow made of butter at the Iowa State Fair (ISF).
Someone then created a Twitter handle off that typo.
Really, just old-fashioned, cutthroat PR warfare. Anyone truly representing the agenda of this fictional IFS Buttercow would not want to taint the campaign with such egregious views; this was the work of someone looking to sublimate the Trump/Pence team.