@CNN: Hours before the National School Walkout began in the United States, students in other countries got up from their desks to protest gun violence https://t.co/2ZYMpqbfh7 https://t.co/WVS2PFqKQo

@CNN: Hours before the National School Walkout began in the United States, students in other countries got up from their desks to protest gun violence https://t.co/2ZYMpqbfh7 https://t.co/WVS2PFqKQo