Diane Shaw, a crossing guard, stops traffic for students as they cross to attend classes at Marjory Stoneman Douglas High School for the first time since the shooting that killed 17 people. (Joe Raedle/Getty Images/AFP)
Diane Shaw, a crossing guard, stops traffic for students as they cross to attend classes at Marjory Stoneman Douglas High School for the first time since the shooting that killed 17 people. (Joe Raedle/Getty Images/AFP)