A professor has resigned from his position over social media posts, where he expressed support for the extreme-left antifa and his hatred for evangelical Christians.

Jeff Klinzman, an adjunct English professor at Kirkwood Community College in Cedar Rapids, had posted on a Facebook page named "Iowa Antifa." He commented "Yeah, I know who I'd clock with a bat ..." in response to a tweet from President Trump describing antifa as "Radical Left Wack Jobs who go around hitting ... people over the heads with baseball bats."

He also wrote that he wanted to "stop evangelical Christians" and posted a poem that said, "Kill them all and bury them deep in the ground." Klinzman explained why he shared the poem, "It's not pretty, and I'm not proud, but seeing what evangelical Christians are doing to this county and its people fills me with rage, and a desire to exact revenge."

When contacted by Cedar Rapids ABC affiliate KCRG, Klinzman said he was part of the group, "I affirm that I am antifa."

Antifa is a far-left group that often goes to rallies to fight white supremacists or groups they perceive to be racist. They also have a history of attacking journalists covering the protests.

Lori Sundberg, president of Kirkwood, said in a statement: "Our decision to remove Mr. Klinzman from the classroom has nothing to do with the substance of his views or his right to express them. Rather, our decision is based solely on our commitment to fostering a safe learning environment for our students, faculty and staff."