In the United States, survivors of last week's school shooting in Florida have announced a national march on Washington to demand political action on gun control. <br/><br/>Student organisers told US media that the "March for Our Lives" is scheduled on Saturday, with sister rallies planned across the country to call attention to school safety and ask lawmakers to enact gun control. The students will also meet with a lawmaker who is seeking to ban the sale of assault-style weapons like the one used in the school shooting.