Marches took place across the United States and around the world.
Donald Trump took the oath of office Friday.
Donald Trump faces a deeply divided country.
Donald Trump takes the oath of office to become the 45th president of the United States on the U.S. Capitol steps on Friday.
The first U.S. president, George Washington, was inaugurated in New York City.
The new $100 gold coin features an African-American woman as the face of Lady Liberty.
More than 40 representatives have said they will not attend the inauguration.
President Barack Obama leaves the economy to Donald Trump in much better shape than when he took office in 2009.
U.S. President-elect Donald Trump now says he believes Russia was involved in cyberattacks during the presidential election.
The president warned that the nation faces threats to democracy, such as issues of economic and racial inequality.