E.R. Dr. Emmy Betz and Dr. Larry Wolk, the head of the state's public health department, talk about a lack of funding for gun research, and a few bright spots.
Every year since Neville was elected in 2014, he’s introduced a bill to allow concealed carry on school grounds.
Frank DeAngelis, who retired from Columbine in 2014, said the shooting survivors will deal with the tragedy in different ways.
The horror of April 20, 1999 changed Patrick Neville and Samantha Haviland's lives in different ways, yet inspired both to take action and serve others.
Scott's daughter, Rachel, was among 13 killed in the 1999 rampage in suburban Denver.
A group of teens held a similar "lie-in" at the start of the week outside of the White House to demand tougher gun laws.
A trainer at the University of Colorado who works with dozens of schools says culture change is happening, but slowly.
In a written statement, Gov. Hickenlooper said deadly violence against officers is having a chilling impact and the state "must come together and say enough is enough."
Matthew Riehl's six-year descent from a budding attorney to a gunman who live-streamed some of his final violent hours had struggled with episodes of mental illness.