A YouTube video is making the rounds that shows an apparent clash between coal company workers and mountaintop removal opponents. It’s posted by one of the activists and takes place at the annual Keepers of the Mountains family picnic in West Virginia. According to the video’s author, a group of people in Massey Energy shirts showed up at the picnic and began arguing.

Because of highly inappropriate language and gestures, I won’t embed the video. Watch it at your own risk here.