Comparison aerial photos from the Associated Press, showing the crowd at the swearing in of Barack Obama in 2009 (left) and Trump (right).

New President Donald Trump, sworn-in on the front of the U.S. Capitol on Friday, spent his first full day in office Saturday doing what he does best.

Lying.

Trump dispatched his press secretary, Sean Spicer, to stand in front of the media and claim: “This was the largest audience to ever witness an inauguration — period — both in person and around the globe.”

As is typical of a Trump operation, Spicer did not add a single piece of evidence to back the claim.

Neither did the new President who took on the media in an appearance at the Central Intelligence Agency, saying:

I looked out. The field was — it looked like a million, a million and a half people.  (One TV network) said we drew 250,000 people. Now that’s not bad. All the way back to the Washington Monument was packed. (What the media reported was) a lie. So we caught them, And we caught them in a beauty. And I think they’re going to pay a big price.

Typical Trump.  Offer a bald-faced lie, then follow it up with a threat.

Comparison photos from aerial shots taken at the Jan. 20, 2009 inauguration of President Barack Obama and Friday’s one for Trump show the National Mall packed for Obama and a lot of empty space for Trump.

Trump and Spicer said Washington’s Metro subway system reported “record numbers” with “packed trains.”

Metro, on its Twitter reports, found 193,000 trips taken by riders at 11 a.m. Saturday. At the same hour eight years ago, there had been 513,000 trips. Four years later, there were 317,000 for Obama’s second inauguration. There were 197,000 at 11 a.m. in 2005 for President George W. Bush’s second inauguration.

Trump says he is “at war” with the “dishonest” media.

Good.  We in the media love a good fight, especially against a serial liar.