This 1969 clip shows mostly young Americans protesting in San Francisco against the United States’ participation in the Vietnam war.

Begins with a night scene. Two cops in riot gear escort a female protestor — seems like she’s been arrested. The sound of people  protesting permeate the shot.

Cops wearing riot helmets and holding batons walk swiftly down a crowded street. Protestors stand on the side of the street; some hold signs. A red “UNITED AIR LINES” sign stands in the background.

A crowd of people stand behind large glass windows — perhaps inside the lobby of a hotel — and watch the protests unfold. A woman in the crowd smiles at the camera.

In the final shot of this night scene, protestors are now chanting some slogan as police officers in riot gear continue to walk down the street.

The clip's remaining protest shots take place during the day in San Francisco’s Union Square, a popular shopping district.

An American flag hangs in the foreground as thousands of protestors populate Union Square in the background. The entire protest area is partitioned off. Cops stand on the street — likely Geary Street — facing the crowd of protestors.

A young man holds the sign “STOP THE WAR.”

Near a Volkswagen van, another young man holds the sign “WAR KILLS.” There is a peace sign in black and green. There is also a second peace sign, which is in red and silver and is connected to a Christian cross.

Over the entrance to a parking garage, a banner reads, “U.S. out of KOREA AND VIETNAM NOW!”

Yet another sign reads, “STOP NIXONS WAR.” A man standing next to the sign makes a peace sign at the camera. People are chanting, it appears, “Free Bobby Seale! Free Bobby Seale!…” Bobby Seale was one of the leaders of the Black Panther Party, an activist group in support of far-left, revolutionary ideas.

In the very final shot, police officers stand on the street with batons in hand. In the background, pedestrians cross Geary Street.