Which image best illustrates the fall of the Berlin Wall, 20 years ago?

On Nov. 9 1989, East Germany opened the checkpoints along its border with West Germany, including in Berlin. Huge crowds flooded through and began pulling down the wall that divided the city, signaling the decline of communism around the world.

This monumental event produced many moving images. We've chosen four below and want to know which one you think best captures the significance of the fall of the wall.

To choose the image, simply click on the photo until a green box with a check mark appears. Scroll down and click "Vote."

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