A spokesman for Senate Minority Leader Harry ReidHarry Mason ReidSenate Republicans eye rules change to speed Trump nominees Harry Reid knocks Ocasio-Cortez's tax proposal: Fast 'radical change' doesn't work Overnight Defense: Trump rejects Graham call to end shutdown | Coast Guard on track to miss Tuesday paychecks | Dems eye Trump, Russia probes | Trump talks with Erdogan after making threat to Turkey's economy MORE (D-Nev.) said Sunday that all Americans should fear President-elect Donald TrumpDonald John TrumpTrump claims media 'smeared' students involved in encounter with Native American man Al Sharpton criticizes Trump’s ‘secret’ visit to MLK monument Gillibrand cites spirituality in 2020 fight against Trump’s ‘dark’ values MORE's threats of legal action against his critics.

“It only took five days for President-elect Trump to try to silence his critics with the threat of legal action. This should shock and concern all Americans," Reid's deputy chief of staff, Adam Jentleson, said in a statement.

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“Trump has always used threats and intimidation to silence his critics. Now he wants to silence a discussion of the acts of hate and threats of violence being committed in his name across the country. Silencing this discussion normalizes hate and intimates the victims," Jentleson added.

On Friday, Reid criticized Trump, calling him "a sexual predator who lost the popular vote."

Trump's campaign manager, Kellyanne Conway, told "Fox News Sunday" that Reid's comments were "beyond the pale."

"And he should be very careful about characterizing somebody in a legal sense. He thinks he's just being some kind of political pundit there, but i would say be very careful about the way you characterize it," Conway said.

Conway denied that she was suggesting Trump would sue the outgoing Senate minority leader over the comments, but said she hoped President Obama would tell Reid to halt the attacks.

"I'm calling for responsibility and maturity and decency for somebody who has held one of the highest positions in our government in a country of more than 300 million people," she said. "I hope President Obama calls Harry Reid today and says 'cut it out.'"

In the statement, Jentleson slammed Trump for having the support of the Ku Klux Klan, arguing that the white supremacist group views "Trump as their champion."

“But instead of rising to the responsibility of his office, Trump is hiding behind his Twitter account and sending his staff on TV to threaten his critics," Reid's spokesman said.