On Jan. 21, an estimated 500,000 people gathered in Washington, D.C. for the Women’s March on Washington. More than 600 sister marches took place around the world, including Philadelphia, Chicago, Phoenix, Los Angeles, London and Paris. The Metro system was flooded with an estimated 470,000 riders, which is more than Friday’s inauguration. The march was very peaceful, and D.C. police confirmed that there weren’t any arrests made in connection with the march.

At the end of the day, marchers left their signs outside the White House.

Protesters march towards the White House with a sign that reads “UNITY.” (Heather Kim/Bloc Photographer)

A wave of protesters proclaiming their resistance and willingness to fight against being mistreated. (Heather Kim/Bloc Photographer)

LGBTQIA protesters shout encouragements towards others who are marching. (Heather Kim/Bloc Photographer)

Protesters are seen waving the Mexican flag behind a sign that displays resilience. (Heather Kim/Bloc Photographer)

Protester stands on top of a traffic light to look out at the sea of marchers. (Bloc Photographer)

Protesters as far as the eye can see, with seemingly no end. (Heather Kim/Bloc Photographer)

A lone poster left behind and hung on a tree, promoting solidarity and resistance. (Heather Kim/Bloc Photographer)

A single pink bicycle left on a fence by the march. (Heather Kim/Bloc Photographer)

Lincoln poses with a sign left behind by a protester that reads “I’M WITH HER.” (Heather Kim/Bloc Photographer)

Another lone sign left behind and taped to a lamppost. (Heather Kim/Bloc Photographer)

An elderly man walks proudly among the marchers with a sweater that promotes love with no exceptions. (Heather Kim/Bloc Photographer)

Jasmine Tiamfook, a junior from River Hill High School, stands firmly in front of the Capitol before the march. (Heather Kim/Bloc Photographer)

Lily Ha (left) and Emily Gorey, freshmen from College Park, pose in front of the Capitol before they leave to join over 500,000 others. (Heather Kim/Bloc Photographer)

Christiana Patch, a senior from River Hill High School, stands with her back to the camera to proudly display her jacket which reads “WHO RUN THE WORLD?” (Heather Kim/Bloc Photographer)

Protester from Colorado stands proudly with her sign, showing that she will continue to rise in unity with those around her. (Heather Kim/Bloc Photographer)

A University of Maryland almuni, adorned in an American flag hijab, poses for a quick portrait. (Heather Kim/Bloc Photographer)

Man in the crowd places his hand on his wife’s shoulder reassuringly. (Heather Kim/Bloc Photographer)

A significant number of marchers brought signs with them. Many were funny, clever and inspirational, while others were reminiscent of President Obama’s time in office. Most, though, were about women empowerment, and about inspiring others to support each other. (Julia Lerner/Bloc Photography Editor)

While many brought signs to the march, others brought physical objects. One individual brought a large, inflatable penis in order to convey their message. (Julia Lerner/Bloc Photography Editor)

A significant number of marchers brought signs with them. Many were funny, clever and inspirational, while others were reminiscent of President Obama’s time in office. Most, though, were about women empowerment, and about inspiring others to support each other. (Julia Lerner/Bloc Photography Editor)

While the march was not inherently anti-Trump, as it was intended to be simply pro-women’s rights, there were still a large number of people protesting Trump’s presidency, and reminding people of the derogatory comments Trump made during his campaign. (Julia Lerner/Bloc Photography Editor)

While the march was not inherently anti-Trump, as it was intended to be simply pro-women’s rights, there were still a large number of people protesting Trump’s presidency, and reminding people of the derogatory comments Trump made during his campaign. (Julia Lerner/Bloc Photography Editor)

While the march was not inherently anti-Trump, as it was intended to be simply pro-women’s rights, there were still a large number of people protesting Trump’s presidency, and reminding people of the derogatory comments Trump made during his campaign. (Julia Lerner/Bloc Photography Editor)

A significant number of marchers brought signs with them. This sign was a reminder for many women as to why they were marching. (Julia Lerner/Bloc Photography Editor)

A dad carries his exhausted daughter towards the end of the march. (Julia Lerner/Bloc Photography Editor)

Throughout the march, chants could be heard rising from the crowd. People would yell assorted messages such as: “No Trump! No KKK! No fascist USA!” and “This is what democracy looks like!” (Julia Lerner/Bloc Photography Editor)

An elaborate poster evokes Princess Leia’s role in the Rebel Alliance in the Star Wars franchise. (Katrina Schmidt/Bloc Reporter)

Women’s March attendees climb trees to gain a better view of the rally. (Katrina Schmidt/Bloc Reporter)

A demonstrator holds a poster expressing exasperation. (Katrina Schmidt/Bloc Reporter)

A sea of protesters flood the National Mall. (Katrina Schmidt/Bloc Reporter)

Civil rights and the fight to end violence are among the Women’s March “Unity Principles,” and many protesters carried Black Lives Matter posters. (Katrina Schmidt/Bloc Reporter)

Many attendees wore “pussy hats,” knitted pink hats intended to reclaim the often derogatory term “pussy.” (Katrina Schmidt/Bloc Reporter)

Attire adorned with female genitalia was common at the march. (Katrina Schmidt/Bloc Reporter)

“Nasty woman,” President Trump’s insult to former opponent Hillary Clinton, was used a rallying cry at the march. (Katrina Schmidt/Bloc Reporter)

A poster points out the power of the sheer size of the Women’s March. (Katrina Schmidt/Bloc Reporter)

The march shut down multiple D.C. streets. (Katrina Schmidt/Bloc Reporter)

Protesters chanted “this is what democracy looks like” at the march. (Katrina Schmidt/Bloc Reporter)

A woman put a twist on President Trump’s infamous “grab them by the pussy” comment. (Katrina Schmidt/Bloc Reporter)

Featured Photo Credit: A number of people wore flags to the march to show their patriotism, while still protesting the inequality present in the United States. (Julia Lerner/Bloc Photography Editor)

Heather Kim, Julia Lerner and Katrina Schmidt contributed to this article.