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. GreenVoters split on if House Dems should begin Trump impeachment proceedings, poll finds Dem strategist says Trump should not be impeached Cummings throws cold water on impeaching Trump 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 BoehnerEthics panel reprimands Freedom Caucus chairman over handling of harassment allegations Pelosi allies rage over tactics of opponents Meet the lawyer Democrats call when it's recount time 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.