The Energy 202: Nonviolent climate activists reconsider protest tactics in Capitol after mob attack Dino Grandoni with Alexandra Ellerbeck Nonviolent protests have always been a staple of climate activism on Capitol Hill. Now the attack on Congress by a pro-Trump mob is forcing environmental activists to reconsider what tactics they will continue to use. The days of hounding lawmakers by disrupting their committee hearings and staging peaceful sit-ins at theirs offices are on pause, at least for the moment, as security tightens in Washington after Trump supporters violently assaulted the Capitol Building on the day Congress was set to certify President-elect Joe Biden's election win.