Remember back in March, when high school students in several towns across Montana staged marches against gun violence ? The marches began a month after 17 students and staffers were shot to death at Marjory Stoneman Douglas High School in Parkland, Florida. One of those groups, Helena Youth Against Gun Violence , has remained active. They hosted a U.S. House candidates forum last spring, and on Tuesday night held what they called their re-launch meeting.