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The Bloviator strikes again!

Notorious hothead Alec Baldwin slugged a driver in the face when the motorist pulled in to park at a spot that was being held for Baldwin, cops said.

“He just got into an altercation with someone over a parking [spot],” said one witness to the Friday afternoon fight outside Baldwin’s building in the Village, and would only identify himself as Albert. “It’s like a scene from ‘Goodfellas.’”

An unidentified Baldwin relative was holding a parking spot for the actor’s hulking black Cadillac SUV on East 10th Street when another driver in a black Saab swooped in and took the spot away around 1:35 p.m., cops said.

When the Saab driver hopped out to feed the meter, Baldwin went ballistic on him, cops and witnesses said.

“What do you think you’re doing!” Baldwin fumed, according to another witness, a construction worker who also declined to be named.

“Alec was yelling ‘Shut the f–k up!’” the hardhat added.

Yelling escalating to shoving, and finally the tantrum-throwing thespian, 60, belted the victim, 49, cops said.

Baldwin was arrested for misdemeanor assault, and is sitting in a holding cell at the NYPD’s 6th Precinct station house in Greenwich Village, cops and police sources said.

The victim wasn’t seriously hurt, but was taken to the Lenox Health – Greenwich Village emergency room to be checked out, authorities said.

Parking tickets were spotted on both cars after the dust-up, though neither driver was around to see the fallout.

A woman identified as Baldwin’s nanny was spotted moving his ticketed Cadillac into a garage across the street soon after the incident — only to replace it in the spot with another Caddy.

It’s just the latest run-in for the actor with an infamously hair-trigger temper, who was arrested in May 2014 for going on a profanity-filled tirade against two uniformed cops who stopped him for cycling the wrong way down a one-way street.

Police sources teed off on an actor of Baldwin’s stature for getting involved in a parking spot street fight.

“With all his money, why isn’t he parking in a garage?” said one incredulous source.

Added another source of the actor, whose famous roles include a blistering Donald Trump impersonation on “Saturday Night Live,” “He can act like Donald Trump on TV, but not in real life.”

Asked about Baldwin’s arrest, President Trump said with a gloating smile, “I wish him luck.”