In addition to references to Jan. 6, Harris took on Trump's other legal battles head-on. Trump faces indictments in Georgia as well as a federal indictment out of Washington, D.C., over his efforts to overturn election results.

"And now for an entirely different set of crimes, he was found guilty of fraud by a jury of everyday Americans," Harris said, referring to Trump's conviction on 34 counts of falsifying business records in connection with a hush money payment to adult film actress Stormy Daniels in the weeks leading up to the 2016 presidential election.

Harris also referred to a jury that found Trump liable for sexually abusing and defaming the writer E. Jean Carroll.

"Consider what he intends to do if we give him power again. Consider his explicit intent to set free violent extremists who assaulted those law enforcement officers at the Capitol," Harris said.

Harris says that if Congress passes a bill to restore reproductive freedom, she would "proudly" sign it into law.

She did not mince words when she said Trump and his allies are "out of their minds" for limiting access to abortion, birth control and other health care.

"Why exactly is it that they don't trust women? Well, we trust women. We trust women," she said.

Harris spoke about how she had a middle-class upbringing and said that her mother kept a "strict budget."

"We lived within our means, yet we wanted for little, and she expected us to make the most of the opportunities that were available to us and to be grateful for them, because, as she taught us, opportunity is not available to everyone," Harris said.

Harris said that, if elected, she would create an "opportunity economy" where she said, "Everyone has the chance to compete and a chance to succeed."

"Whether you live in a rural area, small town or big city, and as president, I will bring together labor and workers and small-business owners and entrepreneurs and American companies to create jobs, to grow our economy and to lower the cost of everyday needs like health care and housing and groceries," she said. "We will provide access to capital for small-business owners and entrepreneurs and founders, and we will end America's housing shortage and protect Social Security and Medicare."

Harris said Trump would run up the national debt with "another round of tax breaks" for wealthy Americans.

"All the while, he intends to enact what, in effect, is a national sales tax — call it a Trump tax — that would raise prices on middle-class families by almost $4,000 a year," she told the crowd. "Well, instead of a Trump tax hike, we will pass a middle-class tax cut that will benefit more than 100 million Americans."

Sen. Jon Tester, D-Mont., who faces a tough re-election fight, told NBC Montana, “I’m not going to endorse for the presidential, and I will tell you why.”

“No. 1, I’m focused on my race,” Tester said at an event in Hamilton, Montana. “And No. 2, folks have wanted to nationalize this race, and this isn’t about national politics; this is about Montana.”

Tester will face Trump-backed Tim Sheehy in a state Trump won twice. Tester is not attending the convention this week.

Harris urged voters to "consider what he intends to do if we give him power again."

"Consider the power he will have, especially after the United States Supreme Court just ruled that he would be immune from criminal prosecution," she said.

"Just imagine Donald Trump with no guardrails and how he would use the immense powers of the presidency of the United States, not to improve your life, not to strengthen our national security, but to serve the only client he has ever had: himself," she said.

"We know what a second Trump term would look like," Harris said. "It's all laid out in Project 2025, written by his closest advisers."

Project 2025's goal "is to pull our country back to the past. But America, we are not going back. We are not going back," Harris said before she listed off a series of GOP policy proposals, like eliminating the Affordable Care Act and the Education Department.

Harris argued that another Trump term would have serious consequences.

"Consider not only the chaos and calamity when he was in office" and then what happened when he lost, Harris said in reference to Jan. 6.

"Donald Trump tried to throw away your votes, and he failed. ... When politicians in his own party begged him to call off the mob and send help, he did the opposite. He fanned the flames," she said.

Harris detailed her work as a courtroom prosecutor, saying she stood up for women and children and against people who abused them.

"As attorney general of California, I took on the big banks, delivered $20 billion for middle-class families who faced foreclosure and helped pass a homeowner bill of rights, one of the first of its kind in the nation," she said.