Some very disturbing undercover footage of cows being beaten at an Ohio dairy farm has been released to the public. According to the Chicago-based animal welfare group Mercy For Animals, which advocates a vegan diet in the name of farm animal protection, the footage was taken at Conklin Dairy Farms in Plain City, Ohio, during a recent month-long, hidden-camera investigation. A warning, the video embedded below is graphic in nature and was produced by Mercy For Animals. Animals are shown being stomped, beaten with a tire iron, and jabbed with a pitchfork. The group is pushing for criminal prosecution of the workers featured in the violent film. Conklin Dairy Farms has not yet made a statement about the video, according to the AP. That probably won't last long. Brian Ross and the investigative unit worked with Mercy For Animals in January on an investigation into animal abuses at a large New York dairy farm. In that case, the investigation, focused more on controversial industry practices — such as how cows are dehorned, pictured above, and tail-docking. An employee caught on tape striking a cow was eventually suspended. This previous blog on the topic remains an active comment thread filled with outrage but also several reminders from those in the agriculture community of the old adage, "one bad apple doesn't spoil the bunch." And here is the Brian Ross "Nightline" report, "The Ugly Side of Milk." UPDATE: Dairy farm worker Billy Joe Gregg Jr., 25, has been charged with 12 counts of cruelty to animals after the release of the video, the AP is now reporting. Gregg, pictured in his mugshot below, was also fired. He is being held pending his arraignment Thursday, according to the local prosecutor. Meanwhile, the fourth-generation Conklin Dairy Farms released a statement condemning the violent treatment of animals. "We will not condone animal abuse on our farm," the statement reads. "We have launched our own internal investigation into this matter and will be conducting interviews with everyone on our farm who works with animals." The police investigation is also ongoing.