Donald Trump roared back at Hillary Clinton’s accusations of racism and hate with three words: Shame on you.

Railing against Clinton for smearing and lying about “decent people,” Trump blasted his Democratic opponent Thursday for suggesting his campaign had allied itself with the likes of racists, white supremacists and Ku Klux Klan members.

 “I will work to dismantle the criminal gangs and cartels and to liberate our poorest citizens from crime and violence and poverty and fear,” he said at a rally in Manchester, New Hampshire. “To Hillary Clinton and her donors and advisers, pushing her to spread smears and her lies about decent people, I have three words."

Gesturing at the cameras with his right index finger, Trump intoned, "I want you to remember these three words: Shame. On. You."

Earlier, in his prebuttal to Clinton’s speech in Nevada, Trump said: "Now, I have not seen what Hillary is going to say. But I’ve heard about it. And, in a sense, I don’t want to dignify her statements by dwelling on them too much, but a response is required for the sake of all decent voters she is trying to smear."

Accusing Clinton of being “in hiding,” Trump observed that his opponent “is emerging not to take responsibility for her unethical and criminal conduct, but instead to make one of the most brazen attempts at distraction in the history of politics.”

The comments follow the Clinton campaign's release Thursday of a video featuring members of the KKK and Confederate flags waving, an ad that the Trump team denounced as a "disgusting new low."

"The news reports are that Hillary Clinton is going to try to accuse this campaign, and the millions of decent Americans — at record levels. This was set up — this event was set up late last night, and look what happens,” Trump said, gesturing to the crowd at the rally in Manchester. “Look how many people.

“It's a movement, folks, like they've never seen before. And going to accuse decent Americans who support this campaign, your campaign, of being racists, which we're not," Trump said. "It’s the oldest play in the Democratic playbook."

Democrats resort to “this one tired argument" when their policies fail, Trump continued. “You’re racist. You’re racist. You’re racist. They keep saying it. It’s a tired, disgusting argument, and it’s so totally predictable. They are failing so badly.”

"They keep going back to this same well, but you know what? The people are becoming very smart. They’ve heard it too many times before," the Republican nominee continued. “The well is dry. The well is dry. This is the year the American people who believe in much better and much more honest politics say the word enough. Enough.”

“This is the year that the people who have been betrayed by Democratic policies, including millions and millions of African-American and Hispanic-American citizens reject the politicians who have failed them over and over and over again for 50 years, for 75 years, without break for even in some cases 100 straight years,” Trump said. “They failed them. And you're going to vote for a change. It's time.”

Repeating his criticism of Clinton's policies, Trump asked, "So what does she do when she can't defend her record?"

"She lies and she smears and she paints decent Americans, you, as racists," Trump proclaimed. "She bullies voters, who only want a better future, and tries to intimidate them out of voting for a change. I'm for change. She doesn't want change."

Trump denounced the “corrupt cycle” of Democratic politicians pushing “policies that are devastating to communities of color and devastating to lots of other communities.”

People who want a secure border “are not racists,” he declared, adding that people who “speak out against radical Islam and who warn about refugees are not Islamophobes.”

“They are decent citizens who want to uphold our value as a tolerant society and who want to keep the terrorists the hell out of our country,” Trump said, jabbing with his finger. “If the choice is between saving lives or appeasing politically correct censors in Washington, D.C., that is the easiest choice you and I will ever have to make.”

On crime, Trump remarked, those "who support the police and who want crime reduced and stopped are not prejudiced."

"They're concerned and loving citizens and parents whose heart breaks every time an innocent child is lost to totally preventable violence," Trump said. "There is no compassion in tolerating crime and poisonous drug dealing and the killings all over our streets in so many different cities."