Washington D.C. police use pepper spray and stun grenades against the crowds on the sidelines of the inauguration Jan. 20.

Fires blazed in downtown Washington D.C. on Jan. 20 following the inauguration, including this limo fire during a protest at 13th and K streets.

A protester flashes the peace sign while walking along the presidential inaugural parade route in Washington, D.C. Jan. 20.

Caution tape blocks off shattered glass windows, damaged by protesters, in Washington D.C. on Jan. 20.

A protester wearing a gas mask stands against a line of riot police in Washington D.C. on Jan. 20.

Protesters confront a man attempting to pass through a gate at the inauguration of Mr. Trump in Washington D.C. Jan. 20.

Activists also set trash cans and vending machines on fire as part of their Jan. 20 protests in Washington D.C.

A lone protester stands in defiance of riot police during the inauguration of President Trump on Jan. 20.

An anti-Trump demonstrator receives treatment after being hit with pepper spray during the inauguration in Washington D.C. Jan. 20.

A protester walks on the National Mall on January 20 in Washington, D.C. 

A protester holds up a sign in Washington D.C. on Jan. 20. 

A protester holds a poster depicting Mr. Trump and Russian President Vladimir Putin kissing during an anti-Trump demonstration on Jan. 20 in Washington D.C.

A protester winces in pain after being pepper sprayed by police during a protest ahead of the presidential inauguration Jan. 19 in Washington.

According to a police spokesman, roughly 95 people had been arrested in Washington D.C. as of 2 p.m. on Jan. 20. Charges included rioting and vandalism.

A police officer readies his pepper spray gun during a confrontation with protesters in Washington D.C. Jan. 20.

Arrests also were made during Inauguration Day protests in New York. Here, City Councilman Jumaane Williams is taken into custody for allegedly blocking traffic outside Trump Tower on Fifth Avenue.

A man is washed with water after being sprayed by police pepper spray during an anti-Trump demonstration on Jan. 20, 2017 in Washington, D.C.

Protesters attempted to block an entrance to the inauguration ceremony. 

Protesters chain themselves to an entry point at the inauguration of Mr. Trump in Washington D.C., Jan. 20.

Protesters are watched by police during an anti-Trump demonstration on Jan. 20 in Washington, D.C. 

One protester displays a sign reading “We outnumber him! Resist!” as he flies over New York shortly before Mr. Trump’s inauguration, Jan. 20.

Angelenos braved a day of torrential downpours and flooding to demonstrate against the inauguration of Mr. Trump on Jan. 20.

A rain-soaked, anti-Trump banner hangs from an overpass on the Santa Monica Freeway during a downpour in Los Angeles on Jan. 20. 

In Manila, activists prepare to dump a photo of Mr. Trump into a trash bin, in a symbolic gesture during a rally in front of the U.S. embassy on Jan. 20. 

Three hundred Philippine activists led by women’s groups gathered to protest his “alarming sexism and racism.”

In Mexico City, protesters react to the Jan. 20 inauguration of Mr. Trump by hitting piñatas made in his image.

Flares burn on a picture of U.S. President Donald Trump during a protest in front of the U.S. Consulate in Milan, Italy. Jan. 20.

A woman passes by graffiti depicting Mr. Trump vandalized with paint in Belgrade, Serbia, on Jan. 20.

An effigy depicting U.S. President Donald Trump lays on the ground during a protest in Panama City Jan. 20.

Protesters in New Orleans stage a mock funeral procession for the Statue of Liberty in response to Mr. Trump’s inauguration.

Protesters hold up signs at the “We Stand United” rally Jan. 19 in New York. The rally was organized by activist organizations MoveOn and Greenpeace and featured speeches from mayor Bill de Blasio, filmmaker Michael Moore and actor Mark Ruffalo.

A group of protesters block the entrance to 555 California St., the only partially Trump-owned building in San Francisco, Jan. 20.

Protesters lock hands on San Francisco’s Golden Gate Bridge Jan. 20.

Activists burn a mock U.S. flag (below) with Mr. Trump’s portrait and a real one (upper) during a rally in front of the U.S. embassy in Manila on Jan. 20.

A man builds a sand sculpture, with the words “yes we can TRUMP you” written on it, by the Tagus river in Lisbon on Jan. 20.

Here, people gather in Berlin, Germany to protest the changing of U.S. power Jan. 20.

Protesters of the environmental organization Greenpeace display placards showing a part of an anti-Donald Trump slogan at the Berlin Wall Memorial in Berlin Jan. 20.

A man passes a banner reading, “Build bridges not walls” on a bridge in Bath, England, Jan. 20. 

Sri Lankan rights activists demonstrate outside the U.S. Embassy in Colombo on Jan. 20.

Residents of Edinburgh, Scotland march to show their disapproval of Mr. Trump on Jan. 20.

A group of demonstrators burn one of Mr. Trump’s “Make America Great Again” hats during a march through downtown Washington D.C. Jan. 19.

A protester walks on the National Mall in Washington D.C. Jan. 20.

A woman closes her eyes as she listens to speeches during an anti-Trump rally in Madrid Jan. 20.

Demonstrators hold signs before the inauguration in Washington D.C. Jan. 20.

A number of left-leaning notables spoke to the New York crowd on the eve of Mr. Trump’s inaugural, including Moore. Other speakers included Robert De Niro, Alec Baldwin and Sally Field.

The Jan. 19 New York protest had been scheduled to start at 6 p.m., but many protesters took to the streets early, including this self-proclaimed “nasty woman.”

A scene from the “United We Stand” rally in New York on Jan. 19.

One New York protester repurposes the poop emoji into a protest sign on Jan. 19.

The Jan. 19 protest outside the Trump International Hotel in New York also featured speeches by singer Cher and actor Mark Ruffalo.

Thousands lined up in the area surrounding New York City’s Trump International Hotel to hear protest speeches Jan. 19.

“Tomorrow Donald Trump will have power,” de Blasio told them. “But tomorrow, you will have power as well.”

One New York  protester created this fortune-telling machine inspired by the film “Big.” It has an animatronic Mr. Trump imploring the viewer to “see how great America’s future is.”

People shout back at the night’s speakers, agreeing to volunteer “on Day One” during the New York rally Jan. 19.

The New York protest crowd stretched on for at least eight city blocks, along Eighth Avenue toward Broadway, on Jan. 19.

Police push back against protesters to clear the sidewalk in front of the National Press Club Building in Washington D.C. Jan. 19.

As part of a nationwide “month of resistance,” anti-Trump group RefuseFascism.org launched an early inaugural protest march through the streets of Washington D.C. on Jan. 18.

RefuseFascism.org protesters wearing masks of Mr. Trump gather at McPherson Square in Washington D.C. Jan. 18.

The group had pledged daily marches in numerous U.S. cities leading up to Mr. Trump’s inauguration.

Protesters in San Antonio gather at a candlelit vigil Jan. 19 to show support for immigrants, women, minorities and others they fear will be hurt during a Trump presidency.

Here, Yon Hui Bell, center, holds her son in front of the San Fernando Cathedral Jan. 19.