Florida teen shooting survivors announce 'March for Our Lives' demonstration in Washington

Teen survivors of the school shooting massacre in Florida last week are calling for a march on Washington to demand action on gun control.

Student organizers of the protest told ABC News' "This Week" Co-Anchor Martha Raddatz on Sunday that they are determined to use protests and political action to make the mass shooting at Marjory Stoneman Douglas in Parkland, Florida, a turning point in the national debate over gun control.

By Quinn Scanlan, ABC News. Read the rest here.