Teacher and student who witnessed Florida school shooting: "Something has to change"
Amid the chaos of the deadly school shooting at Marjory Stoneman Douglas High School in Parkland, Florida, culinary arts teacher Ashley Kurth sheltered dozens of students in her classroom, including senior David Hogg. Hogg, a student journalist, interviewed his fellow classmates during the shooting. Kurth and Hogg join "CBS This Morning" from Parkland to discuss what they witnessed and what message they have for lawmakers.