Update: Invesi­ga­tors behind the Sandy Hook school shooting in New­town, Conn. last December plan to release a report on Monday, November 25, that doc­u­ments addi­tional infor­ma­tion about the gunman and the police response on the day of the tragedy.

On December 14, 2012, one of the worst school shoot­ings in his­tory took place when Adam Lanza killed 20 chil­dren and six women inside Sandy Hook Ele­men­tary School in New­town, Conn. Our experts have looked at topics such as the shooter’s motives, mental health, his­tor­ical trends of vio­lent crimes such as this, as well as com­mu­nity response, how par­ents should talk to their chil­dren about vio­lence and the inci­dent, and what we can learn going for­ward. The shooting’s after­math also prompted a nation-​​wide push for increased gun con­trol and increased back­ground checks for gun purchasers.