"Columbine" author: Mass killing shooters often misunderstood
Dave Cullen: Media, public often don't get story right; Author on categories that help define killers, get to heart of motive
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Dave Cullen: Media, public often don't get story right; Author on categories that help define killers, get to heart of motive
Speculation on shooter Adam Lanza's mental health has lead to calls for improving mental health services in United States
Classes resume for most students in Conn. town as procession of funerals continues for elementary school victims
Titans' Chris Johnson and Giants' Victor Cruz write names of Sandy Hook victims on their shoes; Cruz calls victim's family
The Weinstein Company called off the premiere of the violent spaghetti Western in the wake of the school shooting in Newtown, Conn.
CBS News' John Miller reports retrieving data from badly damaged drives found in Adam Lanza's home is proving to be difficult task
Walmart drops from website same model of semi-automatic rifle that Adam Lanza used; Dick's Sporting Goods pulls assault rifles from all of its 411 stores
A group of organizations offering assistance to those affected by the shooting
Sales of semi-automatic rifle, same used in Newtown massacre, soar since shootings; Civilian version of military weaponry has strong following
Capital management firm is planning to sell its stake in Freedom Group, maker of the Bushmaster rifle, following last week's school shooting
The Chicago mayor defended President Obama's record on guns and said it's "very hard" to take on the gun lobby
Syracuse head basketball coach tells reporters after game failure to get lawmakers to act would mean "we are a sad, sad society"
Politically potent gun rights group yanks Facebook page, not tweeting in wake of rampage that left 26 dead, including 20 children
At least one victim's family accused the Conn. gov. of being "callous" in the wake of the Sandy Hook Elementary shooting
CBS News Poll: Following the mass shooting in Newtown, Conn., support for stricter gun control laws is now the highest it's been in a decade
Adam Lanza took college courses while he was being homeschooled as a teen; Friends of mother say taking care of Adam was her life
Sources say Adam Lanza had the autism disorder, which experts say is marked with difficulties socializing -- not propensity to murder
Many initial reports of the Dec. 14th shootings in Newtown, Conn., were wrong; Details of the fateful day now emerging
Family members in mourning over shooting rampage lay to rest first young victims in week of services for lives lost
Western Connecticut State University said Adam Lanza took the higher-ed classes as a teen; Classmates remember him as nice, quiet
In the wake of Newtown massacre, some pro-gun Democrats embrace stricter gun laws
Sens. Frank Lautenberg (D-NJ) and Dianne Feinstein (D-Calif.) announced they will re-introduce bills banning assault weapons and high-capacity clips
NYC mayor urges specific congressional and White House action in the wake of Sandy Hook shooting
Says he watched Newtown gunman some 11 years ago and Lanza's mother, Nancy Lanza, cautioned him never to turn his back on her son
NRA-endorsed senator says it's time for "common sense" actions to prevent gun violence