Supporters of U.S. President Donald Trump participate in a "Stop the Steal" protest after the 2020 U.S. presidential election was called for Democratic candidate Joe Biden, in Washington, Nov. 14, 2020.
Supporters of U.S. President Donald Trump participate in a "Stop the Steal" protest after the 2020 U.S. presidential election was called for Democratic candidate Joe Biden, in Washington, Nov. 14, 2020.

Police in Washington say they arrested 21 people in connection with pro-Trump demonstrations and clashes Saturday. 

Those arrested included a 26-year-old charged with setting off a commercial grade firework at several Trump supporters eating at a restaurant, and two people from the state of Georgia charged with openly carrying firearms. 

Several rallies were scheduled for the day, including a Million MAGA March, a Women for Trump event and a Stop the Steal demonstration, which leveled unproven claims of voter fraud in the presidential election.

WATCH: Mike O’Sullivan's report

President Donald Trump has refused to concede the presidential race to President-elect Joe Biden, citing irregularities in several swing states. State election officials have reported no serious irregularities with the vote that would affect the outcome of the race.   

About two hours before the pro-Trump rallies were scheduled to begin, Trump rode down Pennsylvania Avenue in a motorcade, smiling and waving at some of the demonstrators who had come to show support for the president.  

Supporters of President Donald Trump cheer alongside his presidential motorcade at Freedom Plaza near the White House in Washington, Nov. 14, 2020.

The motorcade then took Trump to his namesake golf course in nearby Northern Virginia for a round of golf. On his return to the White House, the president again drove by to cheers of supporters, Fox News reported.  

The rallies were promoted by conservative media personalities as well as white nationalists and had fueled plans of counterdemonstrations organized by anti-fascism and anti-racism groups. Some scuffles broke out.  

It is not clear how many people turned up in Washington, and the city’s police department does not estimate crowd sizes. 

What Happens Next?

What It Means to Become President-Elect in the US

In the United States, Democrat Joe Biden is being called the president-elect.

President-elect is a descriptive term not an official office. As such, Biden has no power in the government, and he would not until he is inaugurated at noon on January 20, 2021.

American news networks, which track all of the vote counting, determined on November 7 that Biden’s lead had become insurmountable in Pennsylvania, putting him over the 270 electoral votes needed to be president. Within minutes of determining his lead was mathematically assured, they projected him as the winner.

That is why news organizations, including VOA, are calling Biden the "projected winner."

Sometimes, in the case of particularly close elections, when news networks make this call, the other candidate does not concede victory. President Donald Trump has not done so, alleging voter fraud without substantial evidence and vowing to fight on. The president’s position has left Washington lawmakers divided, with Republicans backing a legal inquiry into allegations of vote fraud, even as they celebrate other congressional lawmakers who won their races.

When will the dispute be resolved?

The U.S. election won’t be officially certified for weeks. In the meantime, court challenges and state recounts could occur.

So far, the Trump administration has not provided evidence for any fraud that could overturn the result, but there is still time for more legal challenges.

Once states have certified the vote, pledged electors then cast their votes in the Electoral College in mid-December. Congress then certifies the overall Electoral College result in early January, about two weeks before Inauguration Day.