Tras Gustav Karlsson Berg, a 35-year-old California resident, has been arrested by federal authorities and charged with threatening an as yet unnamed U.S. senator from California for an e-mail he allegedly sent last month in opposition to taking wolves off the Endangered Species List.

"I'm going to shoot you with a high-powered rifle and bomb your house with poison gas the way wolf hunters do if you don't do everything you can to oppose legislation that would eliminate Endangered Species Act protections for wolves across the country RIGHT FUCKING NOW!" Berg allegedly wrote.