Trump sounds off on guns and mental illness00:55
Republican presidential candidate Donald Trump spoke out on the issue of guns and mental illness in an interview with Chuck Todd, saying mentally-ill people will "come through the cracks" and that "guns, no guns - it doesn't matter."
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