Former New York City Mayor Rudy Giuliani confronted a heckler during a Celebrate Israel Parade over the weekend.

Journalist Jacob Kornbluh of The Forward posted a video of the exchange on Twitter.

Giuliani approached barricades after something the heckler said caught his attention.

“I reduced crime, you jacka**,” Giuliani said, adding, “You are a brainwashed a**hole.”

A man who was potentially the heckler fired back sarcastically, “Very classy.”

Giuliani replied, “I am a class act. You’re probably as demented as Biden!”

Watch the video below:

The exchange comes just days after he met with the House select committee investigating the January 6 riot at the U.S. Capitol, as CNN reported.

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Sources said the appearance lasted for more than nine hours.

CNN noted Giuliani was subpoenaed by the committee in January.

The committee claims Giuliani “actively promoted claims of election fraud on behalf of the former President and sought to convince state legislators to take steps to overturn the election results.”

Additionally, the subpoena says he was in contact with the former president and other members of Congress “regarding strategies for delaying or overturning the results of the 2020 election.”

In August 2021, Giuliani said during a deposition he did not have time to look into whether Trump’s election claims were credible.

“It’s not my job, in a fast-moving case, to go out and investigate every piece of evidence that was given to me. Otherwise, you’re never going to write a story. You’ll never come to a conclusion,” Giuliani said.

Dominion Voting Systems filed a lawsuit against the former New York City mayor after he repeatedly made claims that the company rigged the 2020 election.

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“We had a report that the heads of Dominion and Smartmatic, somewhere in the mid-tweens, you know 2013, 2014, whatever, went down to Venezuela for a get-to-know meeting with Maduro so they could demonstrate to Maduro the kind of vote fixing they did for Chavez,” Giuliani said during the deposition.

An attorney for former Dominion Voting Systems executive Eric Coomer said, “You say the heads of Dominion and Smartmatic.”

Giuliani replied, “Yes, that’s what I was told. … Before the press conference I was told about it.”

He added, “Sometimes I go and look myself — when stuff comes up. This time I didn’t have the time to do it.”