Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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It has been six months since the deadly shooting attack on Sandy Hook Elementary School in Newtown, Connecticut, and the actions of one man still affect the lives of so many.
Seven-year-old Daniel Barden was one of the 20 children killed that day.
Asked what he wants people to remember about his son, his father Mark said, "People used to refer to Daniel in his life as an old soul, and a light. And that's so true."
"And the shame of it is that there are so many people that won't get to meet him now. Daniel had a wonderful way of looking beyond himself, and always concerned with the welfare of others, he wanted to comfort other people, and he was just a constant source of positive energy to all who were around him."
Watch "The Lead" on CNN at 4 p.m. ET for our full interview with Mark Barden.