Six were arrested inside the Hart Senate Office Building Tuesday.
Protesters gained entrance to the Hart Senate office building's atrium and dropped two banners, one reading "End War Now" and the other "People for the People."
NBC News reports as soon as demonstrators unfurled their signs, Capitol Police placed them under arrest. At least six have been arrested for unlawful conduct - demonstrating. Dozens of other demonstrators ran through the building's upper levels chanting and waving smaller signs.
The political protests rumble into a second week in the nation's capital. The demonstrations, smaller in size than the Occupy Wall Street protest in New York City, have for the most part been restrained and peaceful. On Saturday, one demonstrator was arrested after a group attempted to enter the Smithsonian Air and Space museum. Guards repelled the demonstrators with pepper spray, and the museum shut down early.
In Freedom Plaza, several blocks from the White House, a related group calling themselves Stop the Machine are negotiating to remain encamped on Pennsylvania for the next few months. Members of the group vowed they would only leave the plaza if arrested, but thus far, authorities have been handling the group with a light touch.