Dr. Ben Carson, Trump's Housing and Urban Development secretary and former 2016 presidential rival, took the stage and argued that last week's assassination attempt was part of a long line of attacks against the former president.

"First, they tried to ruin his reputation, and he's more popular now than ever. And then they tried to bankrupt him, and he's got more money now than he had before. And then they tried to put him in prison, and he's freer and has made other people free with him. And then -- and then, last weekend they tried to kill him. And there he is over there, alive and well," Carson said to applause.

Carson did not specify who "they" were.

He went on to criticize the media and the government for dividing the nation contending the latter was "shredding our constitution and upending the rule of law.

During Florida Sen. Marco Rubio's remarks, the crowd chanted in honor of Corey Comperatore, the man killed during the assassination attempt on Trump during Saturday's rally.

"He was described as the best dad a girl could ever ask for," Rubio said. "He was a man of God who loved Jesus fiercely. He looked after members of his church. Corey was one of the millions of everyday Americans who make our country great."

Rubio continued, "He wasn't rich. He wasn't famous. And the only reason why we know his name and story now is because last Saturday, he shielded his wife and daughter from an assassin's bullet and lost his life the way he lived it, a hero."

The crowd then broke out into a chant of "Corey, Corey, Corey!"

Over and over again, the speakers on Tuesday night are taking jabs at Vice President Kamala Harris, going after her on immigration and arguing that a vote for President Joe Biden is a vote for Harris.

To be clear, Harris was tasked with addressing the root causes of immigration, not securing the border, but the spotlight on Harris is notable, especially given all the questions and concerns about Biden’s age.

But the argument that Harris is a drag on the ticket may be losing steam -- we have seen in recent days several polls showing Harris doing slightly better than Biden in a head-to-head matchup with Trump.

Of course, even Biden said Tuesday bluntly that Harris could be president, and he has argued a good one at that.

-ABC News' Mary Bruce

Madeline Brame, one of the people billed by the RNC as an "everyday American," spoke about the murder of her son in an impassioned speech.

Her son, Hason Correa, was stabbed to death in New York City in 2018 at the age of 35 after serving in the military.

One of the people charged in his murder was sentenced to 20 years to life in prison, while two accepted plea deals. Brame called the pleas an "injustice" that was "devastating for me and my family."

"We need justice for victims and we need accountability for prosecutors who fail in their duty," Brame said. "Soft-on-crime prosecutors like Alvin Bragg in New York, Kim Foxx in Chicago and George Gascón in Los Angeles have turned our great country and city into war zones."

She said the Democratic Party "stabbed us in the back."

"Joe Biden and Kamala Harris, who claimed to represent us, have abandoned us," she said. "They neglected the poor minority communities across America."

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Democratic party 'stabbed us in the back,' crime victim's mother says

Madeline Brame, one of the people billed by the RNC as an everyday American, spoke about the murder of her son in an impassioned speech.