Follow along with us all day for updates as they happen. The Atlanta Journal-Constitution has eight journalists in D.C. to capture the action live, plus an entire team here in Atlanta.

6:38 p.m. -- The inaugural parade is complete, the inaugural balls are next as the celebration of President Donald J. Trump continues.

It was Trump's day: After the smooth transfer of power from Barack Obama, Trump delivered a fairly short speech that alarmed some concerned about isolationism, but thrilled his fans who believe it's time, as Trump said, to think "only America first. America first."

Feted at a Capitol luncheon and treated to his own parade, Trump was honored.

But on streets surrounding the parade route and his new home, chaos was in the streets. More than 100 protesters were arrested during clashes with police and several innocents bystanders, including a few AJC journalists, were hit with pepper spray as police jostled for position.

Back in Atlanta, protesters marched on city hall although a much larger march is planned for Saturday.

5:02 p.m. -- Trump has returned to the White House and the rest of the parade is following. But elsewhere the protests continues.

4:41 p.m. -- Meanwhile...

4:29 p.m. -- We have a Marla Maples sighting. Our Austin American-Statesman colleague Jonathan Tilove caught up with Trump's ex-wife (and, yes, she's a Georgia native) near the parade grandstand.

Read More: 7 things to know about Trump's ex-wife, Marla Maples

4:23 p.m. -- And the answer is? Of course he got out of the car, at least for a few steps...

4:10 p.m. -- So when will we see the Talladega College Band of Alabama?

Alumni of the 150-year-old historically black college launched a petition and protested the school’s inclusion in the parade, which they saw as an endorsement of President Trump.

But the band decided to go anyway, raising nearly five times the amount of money they had requested through a GoFundMe account set up for the trip.

Read More: Talladega College band marches on toward Trump inauguration

Read More: Historically black college's band raises $365K to play at Trump inauguration

3:55 p.m. -- And now the parade has begun.

President Trump and Vice President Pence will proceed along Pennsylvania Avenue to the White House, where they and their families will take their seats in the presidential viewing stand to watch the rest of the parade.

The big question is whether Trump will get out of his car to greet people who’ve waited as early as 6 a.m. along the route to get a glimpse.

3:43 p.m. --  Our colleague Jennifer Brett has a Facebook Live on the D.C. inaugural protests on the parade route:

3:35 p.m. -- As we await the delayed start of the inaugural parade, protests continue elsewhere in D.C.

3:05 p.m. The luncheon at the U.S. Capitol is finally breaking up and the Trumps and Pences will soon head for the start of the inaugural parade.

Trump spoke briefly to the crowd of dignitaries, politicians and donors.

One point of emphasis for Trump was recognizing Bill and Hillary Clinton.

“I was honored when I heard that former President Bill Clinton and Hillary Clinton were coming today,” Trump said. And I’d like you stand up. I would like you stand up. Honestly there's nothing more than I can say because of a lot of respect for those people.”

3:01 p.m. Speaking of Twitter and Trump, the official @POTUS feed is now Trump's. His first tweet:

2:25 p.m. -- While newscasts cover protests near the inaugural parade route in Washington, Twitter and other social media have also been ablaze. And despite President Trump's efforts to distance himself from white supremacists such as David Duke, that didn't stop Duke from celebrating today on Twitter:

1:52 p.m. -- Trump and Pence are now attending a luncheon at the U.S. Capitol ahead of the 2 p.m. start of the inaugural parade.

Trump and guests will enjoy Maine lobster, Virginia beef and shrimp from the Gulf of Mexico.

Guests include their families, congressional leadership, members of the Supreme Court and their future Cabinet secretaries -- including Sonny Perdue and Tom Price.

According to a menu released by the Joint Congressional Committee on Inaugural Ceremonies on Tuesday, they will lunch on a three-course meal of lobster and shrimp with a saffron sauce and peanut crumble, a second course of beef with dark chocolate, juniper jus and potato gratin, and a chocolate soufflé and cherry vanilla ice cream.

The courses will be served with California wines.

1:26 p.m. President Donald Trump made his first official act Friday when he signed legislation clearing the way for retired U.S. Gen. James Mattis to serve as secretary of Defense.

Read more: Trump signs first bill into law

1:16 p.m. -- It was a different atmosphere in Cobb County:

President-elect Donald Trump was greeted with a standing ovation by Cobb republicans watching his inaugural entrance Friday from the party’s Marietta headquarters

Read more: Cobb County Republicans celebrate

1:15 p.m. -- Meanwhile, in Atlanta: 

Just as President Donald Trump was being sworn in on Friday after vigorously campaigning to fight illegal immigration, hundreds demonstrators marched through downtown to City Hall and called for Atlanta to declare itself a "sanctuary city," a move that could shield many unauthorized immigrants from deportation. Read more: Demonstrators march in Atlanta

1:10 p.m. -- Climate change has disappeared....or, rather, the White House website about former President Obama's climate action plan is among those that have gone cold in the transition:

12:45 p.m. -- Former President Obama and Michelle have boarded Executive One, and the helicopter has taken off from the Capitol as they officially re-enter private life.

12:35 p.m. -- In the meantime, reports our Tamar Hallerman:

12:30 p.m. -- The congratulations have begun. From our inbox, Georgia congressman Doug Collins issued this statement:

“This presidential inauguration represents more than a celebration of an individual person or party, era or idea. While the peaceful transfer of power testifies to the success of the experiment known as American democracy, this inauguration also underscores the character uniting the citizens of our Republic. 

“Our nation was built on principles of universal human dignity and inalienable rights, and our nation stands or falls based on their endurance. I’ve witnessed individuals from both sides of the aisle taking the oath of the presidency, and I’ve seen during these transitions that Americans have an unmatched capacity for humility and mutual respect, regardless of differences in political philosophy. We continue to believe that our fellow men and women have inherent, unquestionable worth, and we draw on this confidence to chart a brighter path forward. 

“Americans have chosen President Donald J. Trump to lead us into this new chapter, which I believe will be marked by relief from policies that stifle American creativity, growth, and freedom and by investment in the people who have trusted one another—through the democratic process—to make America greater than she has ever been before. 

“I look forward to working with President Trump and Vice President Pence to that end.”

12:19 p.m. -- Trump has finished his speech.

12:18 p.m. -- Trump also had a promise about ISIS and the war on terrorism:

“We will eradicate them from the face of the earth.”

12:17 p.m. -- "We will no longer accept politicians who are all talk and no action," Trump said.

The president used similar language last weekend in his Twitter feud with Georgia congressman John Lewis; Lewis boycotted today's inauguration.

12:12 p.m. -- Trump is giving the entire world warning: He will focus on the U.S. first, second and last.

“January, 20 2017 will be remembered as the day the people became the rulers of this nation again,” Trump said.

The days of enriching foreign industry “at the expense of American industry” and foreign armies instead of our own are over, he said.

"We've made other countries rich while the wealth and strength of our country has dissipated over the horizon,” Trump said.

This is the message to the world, he said.

“We are issuing a new decree to be heard in every city, every foreign capital and every hall of power: From this day forward a new vision will govern our land. From this day forward it's going to be only America first. America first. “

12:04 p.m. -- In his inaugural address, Trump praised Barack and Michelle Obama but warned that things are going to change in Washington.

“We will face challenges, we will confront hardships but we will get the job done,” he said.

“For too long a handful of people in Washington have reaped the rewards of government while the people have borne the cost.”

12:01 p.m. -- Donald Trump is the 45th president of the United States.

11:55 a.m. -- 

11:34 a.m. -- In Cobb County, a glimpse of Trump was a cause for cheers.

11:30 a.m. -- We're under way at the Capitol. President Obama has been introduced on the platform. So has Vice President-elect Mike Pence. President-elect Donald Trump is up next.

As we wait, here’s the scene on the ground from our colleague, Ryon Horne:

11:10 a.m. -- Losing presidential candidate Hillary Clinton, who has taken her seat on the inaugural platform with former President Bill Clinton, sent out a tweet at about the same time making clear why she was there:

10:55 a.m. -- President Obama and President-elect Trump are at the U.S. Capitol.

10:47 a.m. -- President Obama and President-elect Trump are leaving the White House, with Trump's procession headed to the swearing-in ceremony. Vice President Joe Biden and Vice President-elect Mike Pence have also left.

It’s a little more than an hour until the official transfer of power will occur.

Not long after Trump's vanquished opponent in November's election arrived, too.

Hillary Clinton and her husband, former President Bill Clinton, also are at the Capitol ahead of the official inauguration. Former President George W. Bush, his wife Laura, and former President Jimmy Carter and his wife Rosalynn, are also there.

10:45 a.m. -- Inauguration protests in D.C. have started, with some protesters near checkpoints and others along the parade route. From our colleague, Jennifer Brett:

10:36 a.m. -- 

10:30 a.m. -- As President Obama awaited the arrival of President-elect Trump this morning, he sent a series of Tweets thanking the country for allowing him to serve them. They are likely his final coda on Twitter via the @POTUS handle. He's also posted a lead photo of him, Michelle Obama and Georgia congressman John Lewis hand-in-hand:

10:20 a.m. -- 

10:10 a.m. -- Georgians have been waiting hours on the parade route in D.C. in hopes of catching a glimpse of the upcoming festivities. Our colleague, Jennifer Brett, has been right there with 'em:

10 a.m. -- This morning's service at St. John's Church in D.C. had a Georgia connection:

Senior Pastor Jentezen Franklin of Free Chapel Church was among those selected to read scripture and pray with the Trump and Pence families during the service, which was held earlier this morning.

Free Chapel has three campuses in Georgia, including in Gainesville and Buford, plus outposts in South Carolina and California.

9:43 a.m. -- Donald Trump and his family have left church in Washington and are headed for the White House.

President Barack Obama and first lady Michelle Obama greeted Trump and his wife, Melania.

In about two hours Trump will take the oath of office as the 45th president of the United States.

Follow along with us all day for updates as they happen. The Atlanta Journal-Constitution has eight journalists in D.C. to capture the action live, plus an entire team here in Atlanta.

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