Giant panda Mei Xiang discovers a birthday cake meant for her cub Bei Bei (NP) who turns one at the Smithsonian National Zoo in Washington, DC on August 20, 2016. (Photo by Linda Davidson/The Washington Post)

Young demonstrators (many shirtless) shout and cheer as they overturn a truck trailer in the Reflecting Pool on the Mall facing the Washington Monument during the “Honor America Day Smoke-In” thrown by marijuana activists to protest the official “Honor America Day” ceremonies being held at the Lincoln Memorial, Washington, DC, July 4, 1970. (Photo by David Fenton/Getty Images)

White House Press Secretary James Brady and District of Columbia police officer Thomas Delahanty lie wounded on the ground after John Hinckley Jr. fired six shots at President Reagan outside the Washington Hilton Hotel in Washington, DC, on March 30, 1981. (Photo by Courtesy Reagan Library via Reuters)

Visitors at the National Zoo check out a parrotfish made from found waste from the ocean in Washington, DC on May 23, 2016. The artwork can be seen at the National Zoo until September 5th. (Photo by Keith Lane/The Washington Post)

A blooming cherry tree is seen along the Tidal Basin on Sunday March 20, 2022 in Washington, DC. As Covid-19 precautions begin to lift around the country large crowds are able to once again descend upon the region for the blossoming cherry trees. (Photo by Matt McClain/The Washington Post)

Heat rising from the pavement distorts the view looking east on Pennsylvania Avenue NW toward the U.S. Capitol as a heat wave intensifies across the Eastern United States on June 18, 2024, in Washington, DC. (Photo by Jahi Chikwendiu/The Washington Post)

Darth Vader balloon above Clifton Suspension Bridge during the hot air balloons mass ascent at sunrise on the first day of the Bristol International Balloon Fiesta on August 8, 2019 in Bristol, England. The Bristol International Balloon Fiesta is Europe's largest annual meeting of hot air balloons, attracting over 130 hot air balloons from across the globe. (Photo by Finnbarr Webster/Getty Images)

Fireworks are seen above the Washington Monument and the White House at the conclusion of the final day of the Republican National Convention on August 27, 2020 in Washington, DC. President Donald Trump and Vice President Mike Pence accepted the nomination as the Republican candidates for a second term in the White House. (Photo by Tasos Katopodis/Getty Images)