A photo shot and tweeted from the floor of the House by U.S. Rep. Katherine Clark, D-Massachusetts, shows Democratic House members staging a sit-in over gun legislation on Capitol Hill in Washington, D.C. on June 22, 2016. Photo by REUTERS/ U.S. Rep. Katherine Clark/Handout.
A photo shot and tweeted from the floor of the House by U.S. Rep. Katherine Clark, D-Massachusetts, shows Democratic House members staging a sit-in over gun legislation on Capitol Hill in Washington, D.C. on June 22, 2016. Photo by REUTERS/ U.S. Rep. Katherine Clark/Handout.