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Occupy Wall Street supporters demonstrate in cities from coast to coast

NBC News and news services report:

Washington's National Air and Space Museum was closed Saturday afternoon after sign-wielding demonstrators tried to storm the building on the National Mall.

Jose Luis Magana / AP

Demonstrators march through the streets of Washington on Oct. 8, as part of Occupy DC activities in Washington.

At least one person was pepper sprayed when the crowd pinned a guard against a wall and another guard came to his rescue, Smithsonian spokesperson Linda St. Thomas told NBC station WRC.

"You cannot bring that stuff in the museum under any circumstances," St. Thomas told WRC.

It was not immediately clear if the protesters were affiliated with the Occupy DC protest that sprung up last week as an offshoot of the larger Occupy Wall Street movement in New York.

Read more here and meet some of the protesters from New York and Seattle.

Jose Luis Magana / AP

A demonstrator lies on the ground at an entrance to the National Air and Space Museum in Washington after police pepper-sprayed a group of protestors trying to get into the museum on Oct. 8, as part of Occupy DC activities in Washington.

Henny Ray Abrams / AP

Occupy Wall Street protesters gather in Washington Square Park, Oct. 8, in New York. The Occupy Wall Street movement started in New York City last month and is spreading to other parts of the country.

AP; Zuma24.com

Left: Cherie Walters, 58, from Mount Clemens, Mich., poses for a photograph, in New York, Oct. 7. Walters, who has participated in Occupy Wall Street protests, is wearing the shirt she wore to two of the protests. Right: A protestor holds a placard with ''Middle class, Middle aged, Also Angry'' during the ''Occupy D.C.'' movement at the Freedom Plaza. Inspired by ''Occupy Wall Street'' movement in New York, activists in Washington continued the ''Occupy D.C.'' movement on its third day.

David Kohl / AP

Protesters march through downtown Cincinnati during the Occupy Cincinnati protest, Oct. 8. The Occupy Wall Street movement started in New York City last month and is spreading to other parts of the country.