Marine Corps Lance Corporals participating in a summer parade held monthly in front of the Lincoln Memorial.

Marine Corps Lance Corporals participating in a summer parade held monthly in front of the Lincoln Memorial.

 Barack Obama’s Motorcade returns to the White House after the President attended the 2016 Nuclear Security Summit.

Barack Obama’s Motorcade returns to the White House after the President attended the 2016 Nuclear Security Summit.

 President Obama delivers remarks at the opening of the Smithsonian African American Museum of History & Culture.

President Obama delivers remarks at the opening of the Smithsonian African American Museum of History & Culture.

 Hillary Clinton reacts to the crowd at a campaign event at George Mason University.

Hillary Clinton reacts to the crowd at a campaign event at George Mason University.

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 Bernie Sanders addresses a crowd in a skate park outside RFK Stadium.

Bernie Sanders addresses a crowd in a skate park outside RFK Stadium.

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 The Women’s March on Washington floods the streets with crowds wearing knitted pink “pussy” hats.

The Women’s March on Washington floods the streets with crowds wearing knitted pink “pussy” hats.

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 Protesters outside the Supreme Court during the confirmation of Justice Brett Kavanaugh.

Protesters outside the Supreme Court during the confirmation of Justice Brett Kavanaugh.

 A banner deployed by Greenpeace hangs between two people from a crane just blocks from the White House.

A banner deployed by Greenpeace hangs between two people from a crane just blocks from the White House.

 DC’s all female Afro-Brazilian percussion band Batalá plays at the Funk Parade in DC.

DC’s all female Afro-Brazilian percussion band Batalá plays at the Funk Parade in DC.

 The Democracy Awakening rally in Washington, DC.

The Democracy Awakening rally in Washington, DC.

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 14th Street is awash with color during DC’s annual Pride Parade.

14th Street is awash with color during DC’s annual Pride Parade.

 The March for Science in Washington.

The March for Science in Washington.

 Protesting the 2016 Nuclear Security Summit in McPherson Square.

Protesting the 2016 Nuclear Security Summit in McPherson Square.

 Protesters cast shadows outside the Walter E Washington Convention Center, where AIPAC holds its annual conference.

Protesters cast shadows outside the Walter E Washington Convention Center, where AIPAC holds its annual conference.

 Protesters outside the Federal Energy Regulatory Commission building in Washington, DC.

Protesters outside the Federal Energy Regulatory Commission building in Washington, DC.

 Outside the Supreme Court during the Fight for Families Rally, June, 2018.

Outside the Supreme Court during the Fight for Families Rally, June, 2018.

 Bethany Yarrow is arrested outside of the Federal Energy Regulatory Commission building.

Bethany Yarrow is arrested outside of the Federal Energy Regulatory Commission building.

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 Demonstrators block a federal office garage entrance in Washington DC.

Demonstrators block a federal office garage entrance in Washington DC.

 A specially painted UH-1N Huey Helicopter flown by the US Air Force passes the Washington Monument.

A specially painted UH-1N Huey Helicopter flown by the US Air Force passes the Washington Monument.

 President Donald Trump returns to the White House after a weekend at Mar-a-Lago.

President Donald Trump returns to the White House after a weekend at Mar-a-Lago.

 US Air Force members exchange glances on the south stairs of the White House.

US Air Force members exchange glances on the south stairs of the White House.

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 Former Senator, Representative and Secretary of Defense William Cohen speaks with guests at the AG Bell Gala.

Former Senator, Representative and Secretary of Defense William Cohen speaks with guests at the AG Bell Gala.

 American public radio host Diane Rehm speaks with a reporter at the National Book Festival.

American public radio host Diane Rehm speaks with a reporter at the National Book Festival.

 Alex Dehgan of Conservation X Labs points to the camera iris of the Orangutan Spy used to observe the species in the wild.

Alex Dehgan of Conservation X Labs points to the camera iris of the Orangutan Spy used to observe the species in the wild.

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 Hafez Ghanem, Vice President of the World Bank for Africa, speaks at the 2019 Spring Meetings.

Hafez Ghanem, Vice President of the World Bank for Africa, speaks at the 2019 Spring Meetings.

 David Attenborough

David Attenborough

 Media personality Julie Gichuru and musician Menes la Plume pose with Somalian Prime Minister Hassan Ali Khayre (center).

Media personality Julie Gichuru and musician Menes la Plume pose with Somalian Prime Minister Hassan Ali Khayre (center).