The crowd on the mall in Washington, D.C., listens to speeches during the inauguration of President Donald Trump, Jan. 20, 2017.

People protesting the inauguration of President Donald Trump gather in the streets of Washington, D.C., Jan. 20, 2017.

Protesters fight amongst themselves on the day of Donald Trump's inauguration in the streets of Washington, D.C., Jan. 20, 2017.

Members of the crowd wear flag inspired clothing on the mall during the inauguration ceremony of President Donald Trump in Washington, D.C., Jan. 20, 2017.

Police in riot gear face off with protesters in Washington D.C., on the day of President Donald Trump's inauguration, Jan. 20, 2017.

People on the national mall in Washington, D.C., celebrate the inauguration of President Donald Trump, Jan. 20, 2017.

Buttons adorn the jacket of a Trump supporter attending the inauguration ceremony in Washington, D.C., Jan. 20, 2017.

Protestors at the presidential inauguration of Donald Trump.

A crowd of people watching the inauguration ceremony of President Donald Trump along the national mall in Washington, D.C., react when an image of his opponent, Hillary Clinton is shown on a TV monitor, Jan. 20, 2017.

The crowd on the mall in Washington, D.C., reacts after President Donald Trump takes the oath of office, Jan. 20. 2017.

Holding an american flag, a supporter of President-elect Donald Trump waits for the inauguration to begin in front of the U.S. Capitol in Washington, D.C., Jan. 20, 2017.

Inside the media center on the mall in Washington, D.C., tv screens show President-elect Donald Trump and Melania Trump with President Barack Obama and First Lady Michelle Obama on the steps of the White House, Jan. 20, 2017.

Supporters of President-elect Donald Trump wait to enter the mall to watch his inauguration during the early morning of Jan. 20, 2017, in Washington, D.C.

Early morning protesters wait for the inauguration activities to begin in Washington, D.C., Jan. 20, 2017.

The U.S. Capitol under a cloudy sky the morning of the inauguration of Donald Trump, Jan. 20, 2017 in Washington, D.C.

People attend the "Make America Great Again! Welcome Celebration" at the Lincoln Memorial in Washington, D.C., Jan. 19, 2017, the night before the inauguration of President-elect Donald Trump.

Supporters of President-elect Donald Trump at a pre-inaugural celebration event in Washington, D.C., Jan. 19, 2017.

Supporters of President Barack Obama at the White House the day before the inauguration of Donald Trump, Jan. 19, 2017, in Washington, D.C

Kyle Towe and Chad Towe, supporters of President-elect Donald Trump, sell buttons the day before his inauguration in Washington, D.C., Jan. 19, 2017.

People express their feelings regarding the potential changes to U.S. immigration policy the day before the inauguration of Donald Trump, Jan. 19, 2017, in Washington, D.C.

Supporters of President-elect Donald Trump tear-up at a pre-inaugural event, Jan. 19, 2017, in Washington, D.C.