MSNBC’s Lawrence O’Donnell must have been having a really bad day on August 29, 2017. If you need proof, just watch this behind the scenes footage of him going crazy during commercial breaks. The video is a  compilation of different moments that lasts about 8 minutes long.

After introducing a clip about President Donald Trump, O’Donnell pauses, and during what one can presume was the clip going on air, a sudden flush of anger creeps onto his face.

“What’s going on, why am I losing this, why don’t I have sound,” he starts, voice rising. “Who’s asking for a Labor Day rundown in my ear?”

“God dammit,” he mutters, shaking his head, before bursting into a brief spasm of fury and slamming his fists on the desk.

In the next clip, O’Donnell finishes up a segment, and declares: “There’s insanity in the control room tonight.” He then begins to visibly shake with anger, but manages to hold his tongue, and continues reading from the prompter.

“You have insanity in my earpiece,” O’Donnell then seethes through tightly drawn lips. “Fuckin.”

The pattern continues in subsequent clips, with O’Donnell continuing to complain angrily about someone talking into his earpiece.

And then…

“STOP THE HAMMERING!” O’Donnell cries suddenly, in response to a knocking sound running faintly in the background.

He then stands up and launches into a shouted tirade past the camera.

“STOP THE HAMMERING UP THERE. WHO’S GOT A HAMMER? WHERE IS IT? WHERE’S THE HAMMER? GO UP ON THE OTHER FLOOR. SOMEBODY GO UP THERE AND STOP THE HAMMERING. STOP THE HAMMERING. I’LL GO DOWN TO THE GODDAMNED FLOOR MYSELF AND STOP IT, KEEP THE GODDAMNED COMMERCIAL BREAK GOING. CALL FUCKING PHIL GRIFFIN, I DON’T CARE WHO THE FUCK YOU HAVE TO CALL. STOP THE HAMMERING. EMPTY OUT THE GODDAMNED CONTROL ROOM AND FIND OUT WHERE THIS IS GOING ON.”

Watch the entire clip below and judge for yourself.

After seeing the footage himself, O’Donnell issued a formal apology on Twitter.

A better anchorman and a better person would've had a better reaction to technical difficulties. I'm sorry.

— Lawrence O'Donnell (@Lawrence) September 20, 2017

H/T Mediaite