MURFREESBORO, Tenn. – While substitute teacher David Colin was supposed to be watching students in Rutherford County Schools, he was instead posting about his hatred for Donald Trump supporters on Facebook.

“The only good Trump supporter is a dead Trump supporter,” Colin allegedly wrote at 9:29 a.m. Nov. 9.

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The post and others were forwarded this week to school officials, who made sure the disturbed teacher won’t be coming back, WZTV reports.

Another post to the sub’s Facebook account from Jan. 16 implied that violence is the only way for leftist radicals to fight against President Trump.

“I spent a lot of time today thinking about the state of this mess. There are huge numbers of people that are upset, mad, angry, (pretty much every negative word), but what I have not seen is a plan. Everyone is looking for leadership to start this off, but there is no one carrying the banner. Without that we will all settle in to becoming angry hateful people and there will be no solutions. So, where do we go from here? Rallies and demonstrations are pretty much futile, since the lunatics just laugh at us knowing we haven’t the guts to stand up and take the actions needed. Writing and complaining falls on deaf ears. Not until the first shot is fired will the recovery begin,” Colin allegedly wrote.

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There was also this one, on Tuesday, attached to a Daily Kos article about Betsy DeVos’s confirmation as Education Secretary:

Without federal aid, places like Tennessee will be forced to close most all schools. What will your kids do next year without any school?

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It’s unclear who tipped school officials off to Colin’s lunacy.

“Rutherford County School received several messages after hours on Feb. 8 about a substitute teacher who is accused of making inappropriate, threatening comments on social media during the work day,” district spokesman James Evans told the Daily News Journal.

“Rutherford County Schools contracts with PESG to provide substitute teachers, and the school district has notified the contractor that the substitute teacher, David Colin, will not be permitted to work any longer as a substitute in Rutherford County Schools,” Evans said.

A PESG spokesman told WZTV “information was presented to us by the school district” and the company is “investigating.”

Several folks on Facebook mocked Colin for being an idiot.

“What’s that popular phrase?” Russell Grubb wrote. “Oh yeah, ‘freedom of speech does not mean freedom from consequences.’”

“Not much of a teacher … how stupid can one be?” Mark Beasley posted. “Open your mouth on social network … be prepared for the consequences.”

“No one that dumb should be teaching kids,” Matt Smith added. “Period.”

“Yeeeeaaaahhhh … you can’t do that, genious,” Fred Jones wrote.