Adam Lanza, this gunman killed 26 people, 20 of them children, in the nation’s second-deadliest school shooting on December 14, 2012. The victims attended and worked at Sandy Hook Elementary School in Newtown, CT. Everybody died from multiple wounds, the child victims were all between 6 and 7 years old.
Columbine High School 4/20/99 13 killed, 24 injured It is the fourth-deadliest school massacre in United States history, after the 1927 Bath School disaster, 2007 Virginia Tech massacre and the 1966 University of Texas massacre, and remains the deadliest for an American high school.
Manson Victims - Charles Milles Manson (born Nov 12, 1934) led the Manson Family, a quasi-commune that arose in California in late 1960s. He was found guilty of conspiracy to commit the murders of Sharon Tate & Leno & Rosemary LaBianca carried out by members of group at his instruction.