luther king, jr., The day to celebrate an inauguration and rededication to democracy in america. Let me show you some images of this day. This is what president barack obama saw as he stepped out on that capitol podium for the last time in his presidency. The president places his hand on the bible of martin luther king jr. And another bible, the one belonging to president lincoln. And, then later on at the parade, the first family, a modern scene here, dad on his blackberry, the girls snapping pictures on their iphones. All day long, abc's david muir en following this, he was there at the capitol watching history on parade this morning. We begin you with, david. Reporter: Good evening, diane. We were just a few steps away from the president, with his hand plad on those two bibles. Authorities here in washington were estimates 600,000 to 800,000 people would turn out to catch this swearing in. But tonight, we just learned from the inaugural committee, just like four years ago, that crowd might have surpassed a million. At the white house, a salute to the president, who was about to be sworn in before the nation. First, that 1.7-mile trip to the capitol. Ahead of the president, on the west front of the capitol, a former president and the secretary of state. Cheers on the national mall for the clintons, mrs. Clinton looking better after that fall. Before their father arrived, the president's growing girls, sasha and malia, 11 and 14, wearing j crew and kate spade, and growing up before a nation. Then, their mother, first lady michelle obama. Mrs. Michelle obama. ter: TO THUNDEROUS Applause, ushering in a new term and those new bangs. And then, the president, walking toward that archway, about to see the hundreds of thousands gathered on the national mall. The president of the united states, barack obama. Reporter: The president emerging, flashing his giant smile, but soon, wiping away a tear, during a stirring performance by the brooklyn tabernacle choir. &#9834; His truth is marching on &#9834; Reporter: And then all eyes on the president and cheech justice john roberts who flubbed his words four years ago. This time, the president's hand on two bibles, president lincoln's and dr. Martin luther king's, and this time, it was the president who sweeped to swallow a word. The office of president of the united states. And will to the best of my ability. Reporter: And then, the president's address, just shy of 19 minutes, with a theme of moving forward together. My fell local americans, we are made for this moment and we will seize it, so long as we seize it together. Together. Reporter: The first president ever to include gays in his inaugural, while talking about the struggle for civil rights. For if we are truly created equal, surely the love we commit to one another must be equal as well. Reporter: The president insisting we address climate change and on immigration, arguing we should welcome strooiching immigrants. Until bright young students and engineers are listed in our work force, rather than expelled from our country. Reporter: Were there powerful performances, kelly clarkson's stirring rendition of "my country tis of thee." &#9834; Reporter: Beyonce returning four years later, this time, to sing the national anthem. &#9834; And the home of the brave &#9834; &#9834; the brave &#9834; Reporter: And as the president made his exit up those steps, a pause. Turning around to take in his final inaugural moment. One more time. A microphone picking up what he said. I want to take a look one more time. Reporter: And as the first couple made their way back to the white house, they emerged from the motorcade just as they did four years ago. The crowds cheering their return home. Then, the first family taking in a parade. The first couple with a kiss. The president moving to the drums. And the girls dancing, too. Like so many families, taking in a parade. And tonight we learned that the family of the late dr. Martin looulter king asked the president and the chief justice to sign the king family bible. Both did. We've learned, obviously, the obamas getting ready for the