Stuffed animals and flowers at a makeshift memorial near the entrance to the grounds of Sandy Hook Elementary School. Brendan Smialowski /AFP/Getty Images hide caption

itoggle caption Brendan Smialowski /AFP/Getty Images

The scene Tuesday night at the Democratic National Convention in Charlotte, N.C. Mladen Antonov /AFP/Getty Images hide caption

itoggle caption Mladen Antonov /AFP/Getty Images

Cory Booker is mayor of Newark, New Jersey and honorary vice-chair of the Partnership for a Healthier America. Doug Van Sant hide caption

itoggle caption Doug Van Sant