How we view mass shooters07:16
Jonathan Metzl, Vince Warren and Jasmine Rand discuss the broader questions surrounding mass shootings and America's passion for guns.
Survivors who became activists commemorate Parkland school shooting10:06
Matthews: On 1 year anniversary of Parkland, Trump has done nothing on guns01:13
One year after Parkland: New gun restrictions on the state level05:46
One year later, remembering Parkland — Has anything changed?02:32
There have been 1,200 young gun violence victims since Parkland05:11
Why gun reform laws are personal for one representative10:19