Democratic groups and supporters of Hillary Clinton immediately cast Donald Trump as unhinged on Tuesday, minutes after he suggested during a rally that "Second Amendment people" could do something if Clinton is elected president and gets to nominate Supreme Court justices.

At his latest campaign stop in Wilmington, N.C., the Republican presidential nominee told supporters there was nothing they could do if Clinton "gets to pick her judges."

"Though the Second Amendment people, maybe there is, I don't know," he added.

The comment sparked outrage across Twitter and led several liberal groups and lawmakers to request the Secret Service get involved.

"Donald Trump's referencing the Second Amendment when it comes to how to deal with a future President Clinton picking judicial nominees is beyond the pale," said Ilya Sheyman of

"The Secret Service should investigate this for what it is, a threat on the life of Secretary Clinton," she added, claiming that "Trump's latest dangerous comment once again proves he is in no way fit to be president."

California Congressman Eric Swalwell, the top Democrat on the House Subcommittee on the CIA, took to Twitter to make a similar plea for the Secret Service to investigate Trump's comments.

Former CIA Director Michael Hayden, who once said Clinton would be "best prepared" to be commander in chief versus Trump, said on CNN that "if anybody else had said this, they'd be out in the parking lot in a police wagon being questioned by the Secret Service."

"The Secret Service is aware of the comments made earlier this afternoon," read an apparent reference to Trump from the official Secret Service Twitter account.

Within 20 minutes of the conclusion of Trump's rally, a Democratic super PAC had contacted senior FBI officials to "raise alarms about [the] call to violence and to demand that Trump face felony charges."

"There is no place in American politics for this kind of disgusting rhetoric," Scott Dworkin, a senior adviser for the Democratic Coalition Against Trump, said in a statement. "Donald Trump should immediately drop out of the race, and he should be arrested for committing a federal crime."

A senior communications official within the Trump campaign defended the candidate in a statement about the "dishonest media."

"It's called the power of unification — 2nd Amendment people have amazing spirit and are tremendously unified, which gives them great political power," said Jason Miller. "And this year, they will be voting in record numbers, and it won't be for Hillary Clinton, it will be for Donald Trump."