This pair of photos shows a view of the crowd on the National Mall at the inauguration of U.S. President Donald Trump, in the first image below, on Jan. 20, 2017.
The next photo shows the inauguration of U.S.President Barack Obama, on Jan. 20, 2009.
Both images were shot shortly before noon from the top of the Washington Monument
Instructions: On desktop, hover over the images to toggle between "before" and "after" shots. On mobile, tap an image to reveal the "after" photo.