Nelba Márquez-Greene lost her 6-year-old daughter, Ana, in the deadly shooting at Sandy Hook Elementary School in Newtown, Conn.
(Photo: Ann Curry) Mark Barden lost his 7-year-old son, Daniel, in the deadly shooting at Sandy Hook Elementary School in Newtown, Conn.
(Photo: Ann Curry)

'Even more determined': Georgia school gunman incident strengthens resolve of Newtown parents

(Photos: Ann Curry)

For parents who lost their children in the deadly shooting at Sandy Hook Elementary School in Newtown, Conn., on Dec. 14, 2012, the news of an armed man entering an Atlanta-area elementary school on Tuesday served as a reminder of the long struggle ahead for enacting gun reforms.

More from NBC’s Ann Curry

(Source: NBCNews.com)