The best signs from the National School Walkout

Students of all ages turned out by the thousands for the National School Walkout to protest gun violence and recognize the lives of the 17 people killed during the mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla. last month. 
At 10 a.m. on Wednesday, kids left their classrooms behind and gathered in school yards, on playgrounds, in parking lots, and marched through streets across the country to participate in the powerful movement.
Some stood in silence for 17 minutes