Something familiar happened in America in February: A gunman walked into a school, and shot and killed 17 students and staff in a horrific act of violence. But then something unfamiliar happened: State legislators — inspired by a movement led by the student survivors of that mass shooting in Parkland, Florida — started passing legislation to restrict gun access.This was a year of unparalleled success for the gun-control movement in the United States. States across the country, including 14 with Republican governors, enacted 50 new laws restricting access to guns, ranging from banning bump stocks to allowing authorities to temporarily disarm potentially violent people. State lawmakers still managed to expand gun access with at least 10 new laws in seven states. These measures — from allowing guns in K-12 schools to bolstering “stand your ground” laws — continued to carry weight in certain parts of the country, even as the gun-control movement steadily gained steam elsewhere.