Students who survived last week's mass shooting at their school in Florida have announced they will march on Washington to demand political action on gun control.<br /> The so-called "March for our Lives" will take place on March 24th, with sister marches planned across the country.<br />Survivors have vowed to make last Wednesday's shooting a turning point in the national gun debate.<br />The rampage left 17 students and staff members dead. <br />
