Eight Democratic lawmakers were arrested Tuesday while advocating for immigration reform at a sit-in on the National Mall in Washington.

Reps. John Lewis (D-Ga.), Charles Rangel (D-N.Y.), Joseph Crowley (D-N.Y.), Luis Gutiérrez (D-Ill.), Keith Ellision (D-Minn.), Jan Schakowsky (D-Ill.), Raúl Grijalva (D-Ariz.) and Al GreenAlexander (Al) N. GreenCNN's King: If GOP loses Ohio special election, impeachment likely 'on the table' Election analyst predicts 'impeachment hearings will happen' if Dems take Congress Steyer presses Dems on impeachment before receptive Netroots audience MORE (D-Texas) were among the estimated 200 people arrested by U.S. Capitol Police for protesting in the streets.

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While most of Washington’s parks have been shuttered because of the government shutdown, Tuesday’s demonstration was allowed because public areas are still available to citizens for First Amendment-related activities.

Immigration activists have recently sought to reignite debate over the issue. The Senate passed a comprehensive immigration reform bill over the summer, and while the House Judiciary Committee has passed some small bills in response, Speaker John BoehnerJohn Andrew BoehnerHouse Dem: Party's aging leaders is 'a problem' Women poised to take charge in Dem majority Freedom Caucus ponders weakened future in minority MORE (R-Ohio) has declined to bring those up for a floor vote. 

Lewis, the famed civil rights activist who has frequently engaged in similar acts of civil disobedience, said over Twitter that it was his 45th arrest.