Memorial to the Children Who Left Us Too Soon (murdered and/or died tragically)

Tribute to children who were murdered and/or died tragically. Featured in the video in order of appearance:
Samantha Bree Runnion (July 26, 1996 - July 16, 2002). She was kidnapped and murdered by a total stranger.
Judith Eva Barsi (June 6, 1978 - July 25, 1988). She was a child actress who had a jealous and abusive father. One night he shot and killed her, as well as her mother.
Heather Michele O'Rourke (December 27, 1975 - February 1, 1988). She suddenly became very ill and died at the hospital on the operating table. She died of cardiac arrest and skeptic shock due to internal stenosis, which had been misdiagnosed. Heather was also a child actress, best known for her role in the "Poltergeist" films.
JonBenet Patricia Ramsey (August 6, 1990 - December 25, 1996). She was found murdered in her basement. The case is unsolved and they have never found the person who killed her.
Adam John Walsh (November 14, 1974 - July 27, 1981). He was abducted from a shopping mall, and later murdered.
Summer Marie Pitner (January 21, 1998 - September 26, 2006). She was killed in a car crash caused by a drunk driver.
Kelsey Shelton Briggs (December 28, 2002 - October 11, 2005). She was a victim of child abuse. Her stepfather eventually killed her by hitting her hard in the stomach.
Riley Ann Sawyers (March 11, 2005 - July 24, 2007). She was also a victim of child abuse, at the hands of her mother and stepfather. They eventually beat her to death.
Baylee Almon (April 18, 1994 - April 19, 1995). She was a victim of the Oklahoma City bombing. She died in the Murrah building's daycare center along with 18 other children.
Kayla Rolland (May 12, 1993 - February 29, 2000). She was shot and killed at her elementary school by a first grade classmate. Until the Sandy Hook shooting occurred, Kayla was thought to be the youngest school shooting victim in history.
Ashlynn Conner (December 2, 2000 - November 11, 2011). She committed suicide because she was constantly bullied at school.
Haylee Danyelle Mazzella (July 13, 2001 - June 3, 2006). She died in an accidental, but very preventable drowning, after being left unattended in a swimming pool by her step-grandmother.
Nixzmary Brown (July 18, 1998 - January 11, 2006). She was physically abused, starved, and molested by her stepfather. One night he killed her in a rage because she took a cup of yogurt from the refrigerator.
James Patrick Bulger (March 16, 1990 - February 12, 1993). He was abducted from a shopping center by two ten year old boys, who then tortured and killed him.
Layla Grace Marsh (November 26, 2007 - March 9, 2010). She passed away from Neuroblastoma, a rare form of cancer.
Christine Lee Hanson (February 22, 1999 - September 11, 2001). She was the youngest victim of the 9/11 attacks. She died along with her parents on board United Airlines Flight 175, the second plane that hit the World Trade Center.