Barack Obama warned that the sequel would “generally be worse” than the first film as he and Michelle Obama tried to mobilize their party in the race against Donald Trump.

In his speech on the second night of the Democratic Party Convention, Obama said the country does not need another four years of “rumbling” and “chaos.”

“We’ve seen this movie before – and we all know that the sequel is usually worse,” he said.

The latest from the Democratic Party Convention

“It’s been a constant stream of nagging and complaining, which has gotten even worse since he’s afraid of losing to Kamala,” he added.

“There are the childish nicknames, the crazy conspiracy theories, this weird obsession with crowd sizes… it just goes on and on.”

When the crowd criticized Trump’s record during his term in office, they booed loudly, to which Obama responded in a spontaneous moment: “Don’t boo – vote.”

“We have the chance to elect someone who has spent her entire life giving people the same opportunities that America has given her,” he told the crowd, confirming Ms Harris as the party’s nominee for the November election.

Paying tribute to outgoing President Joe Biden, who defeated Trump in the last election, he said history would remember him for “defending democracy at a moment of great peril.”

“Hope returns”

Mr Obama was introduced by his wife, Michelle, who is at the top of the party’s wish list as a future president.

Mrs. Obama was greeted with long and loud applause and said at the convention: “America, hope is returning.”

She described Ms Harris as one of the “most qualified” people to ever run for office.

She took aim at Mr Trump, saying: “Who is going to tell him that the job he is currently looking for might be one of those moonlighting jobs?”

She was referring to Mr Trump’s unsubstantiated claim earlier this summer that immigrants were taking on “black jobs.”

Although Ms Harris was not present at the convention to respond to the Obama endorsement, she spoke at a campaign rally in Milwaukee, where she said the election would remain “a close race until the end.”

“We have hard work ahead of us, but we like hard work – hard work is good work,” she said.

Former Trump fans turn

Meanwhile, Mr Trump repeated unsubstantiated claims that Ms Harris had been lenient with police at a campaign rally in Howell, Michigan.

“You can’t just walk across the street to get a loaf of bread,” he said. “You get shot, robbed, raped.”

His speech came a month after a white supremacist rally in the small town, where about a dozen of them chanted “Heil Hitler” and carried signs reading “White Lives Matter.”

“Basement dwellers”

Former Republicans disillusioned with Trump’s leadership spoke at the Democratic convention, including former White House press secretary Stephanie Grisham.

She has become a member of Trump’s family and not just a supporter but a “true believer,” she said.

Behind closed doors, however, he mocks his followers, she says, calling them “basement dwellers.”

She recalled a hospital visit during which he “got angry because the cameras weren’t watching him.”

“He has no compassion, no morals and no loyalty to the truth,” she added. “He always told me, ‘It doesn’t matter what you say, Stephanie. Say it often enough and people will believe you.'”

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Ms Harris is “telling the truth,” she said – a view shared by the grandson of John F. Kennedy, who said she has the same “energy, vision and optimism for the future” as his grandfather.

Celebrities were also present: Rapper Lil Jon sang “Turn Down for What” to introduce the delegates from Georgia, while actress Eva Longoria spoke for Texas.

Outside Congress, dozens of pro-Palestinian protesters stormed a police cordon in front of the Israeli consulate in Chicago.

After the larger gathering began to disperse and splinter into smaller groups, further clashes with police occurred, resulting in over a dozen people being arrested.