Led by Rep. John Lewis (D-GA), at least 31 Democratic lawmakers plan to skip President-elect Donald Trump’s inauguration ceremony Friday.

Lewis, in an interview NBC’s “Meet the Press” that aired Sunday, lashed out against Trump, saying that he didn’t see the president-elect as a “legitimate president” as well as blaming Russian hacking for helping him get elected.

Charles Krauthammer says this is a sign of "the loosening of the threads" of our constitutional system.

"The trust in institutions has declined radically since the second World War," Krauthammer said on "Special Report", "About the only remaining one that is trusted is the military. This is not a good sign."

He acknowledged that Lewis is a genuine hero of the Civil Rights movement, but he should be more cognizant of the "moral weight" he carries.

"To call Trump 'illegitimate' because of the Russian hacking, that's a rather thin reed," Krauthammer said. "It looks as if he was looking for an excuse."

He noted that Trump, however, was wrong to fire back at Lewis on Twitter and say that he should focus on fixing his district rather than “falsely complaining about the election.”

Krauthammer said that Lewis and Trump have created a dynamic that "undermines the majesty" of what's supposed to happen on inauguration day.

Watch more above, and let us know what you think in the comments.

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