Follow the high school's students and families who became fierce leaders of a national movement for gun reform following the shooting of 17 people at Marjory Stoneman Douglas High.Follow the high school's students and families who became fierce leaders of a national movement for gun reform following the shooting of 17 people at Marjory Stoneman Douglas High.Follow the high school's students and families who became fierce leaders of a national movement for gun reform following the shooting of 17 people at Marjory Stoneman Douglas High.