A video of the exchange, which took place at Milwaukee’s Laborfest, was posted to Twitter by a user named Acyn and has garnered over 44,000 views and hundreds of comments.

“As I said last week, we remain in the battle for the soul of America,” Biden told the crowd before being interrupted by the heckler. The audience booed the heckler, but Biden told them to “let [the heckler] go.”

“Let him go,” Biden said. “Look, everybody’s entitled to be an idiot…OK?”

At one point during his speech, Biden issued a warning about “extreme MAGA Republicans in Congress” who are “full of anger, violence, hate and division,” Fox News reported. The comments come directly from a speech he made last week called the “battle for the soul of the nation.”

Speaking then from Independence National Historical Park in downtown Philadelphia, Biden warned the nation that “MAGA Republicans” are threatening the “very foundations of our republic” and are “determined to take this country backwards.”

“MAGA forces are determined to take this country backwards, backwards to an America where there is no right to choose, no right to privacy, no right to contraception, no right to marry who you love,” Biden said. “They promote authoritarian leaders and they fanned the flames of political violence that are a threat to our personal rights, to the pursuit of justice, the rule of law, the very soul of this country.

“I ran for president because I believe we were in a battle for the soul of this nation. I still believe that to be true,” Biden later added.

Hecklers also interrupted that speech by shouting “f**k Joe Biden,” a chant that has been frequently used by supporters of former President Donald Trump after it was heard at major sporting events across the country late in 2021.

Biden addressed those hecklers, saying: “Look, our democracy is imperfect. It always has been. Notwithstanding those folks you hear on the other side there. They’re entitled to be outrageous, this is a democracy. Good manners is nothing they’ve ever suffered from.”

Trump later responded to the address by saying Biden “must be insane.”

“Someone should explain to Joe Biden, slowly but passionately, that MAGA means, as powerfully as mere words can get, MAKE AMERICA GREAT AGAIN! If he doesn’t want to Make America Great Again, which through words, action, and thought, he doesn’t, then he certainly should not be representing the United States of America,” Trump wrote.

“If you look at the words and meaning of the awkward and angry Biden speech tonight, he threatened America, including with the possible use of military force. He must be insane, or suffering from late stage dementia!”

Newsweek has reached out to the White House for comment.