Democratic presidential candidate former Vice President Joe Biden speaks at a primary election night campaign rally Tuesday, March 3, 2020, in Los Angeles. (AP Photo/Chris Carlson)

Joe Biden’s decent continues.

This time, it comes via a video from this morning showing the former VP in a Michigan auto plant. After being challenged by a voter on his Second Amendment record, Biden explodes at the worker in what can only be called a rage.

It’s one of those things you have to see to believe.

9-10 second mark is Joe Biden talking about slapping this guy in the face? pic.twitter.com/FSICU6CaQe

— Peter J. Hasson (@peterjhasson) March 10, 2020

WATCH: "You’re full of sh*t," @JoeBiden tells a man who accused him of "actively trying to end our Second Amendment right."

"I support the Second Amendment," Biden adds while vising under-construction auto plant in Detroit. @CBSNews pic.twitter.com/sueOSBaY9P

— Bo Erickson CBS (@BoKnowsNews) March 10, 2020

On the issue being confronted here, the worker’s concerns are 100% valid. It was just a week ago that Biden announced he’d appoint Beto O’Rourke, who has called for full-scale gun confiscation of semi-automatic weapons, in charge of solving the “gun problem.” Biden has also stumped for an “assault weapons” ban, as well as other measures that would severely limit American constitutional rights.

But past that, Biden’s behavior here is just insane. He once again manages to fall into incoherence, calling an AR-15 an “AR-14” and calling semi-automatics “machine-guns.” Further, his demeanor toward the worker he’s speaking to is way over the line. He cusses, begins yelling, and jabs his finger in the man’s face. He also threatens to slap the guy in the face. This is not the behavior of someone who’s well.

Don’t believe me? Try to imagine a world where Donald Trump gets in a voter’s face, curses at them, and then gets physically threatening with them. How would people react? Would the media spend days on it, proclaiming as proof he’s unhinged and lacks the temperament to be president? You bet they would.

Biden is simply not up for running for President. This is a guy who needs to be sitting at home, dealing with whatever issues he’s got going on. This is not the first time Biden has gotten in a voter’s face. He physically accosted a Democratic primary voter back when his campaign was the ropes. Continuing to put him up in front of people is just cruel. He can’t handle it, physically nor emotionally.

It’s a testament to how partisan our media are that they aren’t making a bigger deal about Biden’s continued mental lapses and public belligerence. He can’t run from this forever and Trump will make it the cardinal issue of the campaign.