John Zawahri, an unemployed 23-year-old, kills five people in an attack that starts at his father’s home and ends at Santa Monica College, where he is fatally shot by police in the school’s library.
A gunman pushes his way into Sandy Hook Elementary School in Newtown, Conn. and shoots and kills 20 first graders and six adults. The shooter, Adam Lanza, 20, kills himself. Lanza killed his mother at the house they shared, before his rampage. In remarks at the White House, President Obama wiped tears away.
L. Goh, 43, a former pupil at a Oikos University, a small Christian college, allegedly opens fire in the middle of a classroom leaving seven people dead and three wounded. Goh was charged with seven counts of murder with three counts of attempted murder and special circumstances. In a jailhouse interview with a San Francisco TV station soon after the shooting, Goh said he was "deeply sorry" for his actions.
Amy Bishop 45, a neurobiologist and assistant professor at the University of Alabama in Huntsville, shoots and kills 3 people at a biology faculty meeting. Bishop is later sentenced to life in prison without the possibility of parole.
Steven Kazmierczak, dressed all in black, steps on stage in a lecture hall at Northern Illinois University and opens fire on a geology class. Five students are killed and 16 wounded before Kazmierczak kills himself on the lecture hall stage.
Seung-hui Cho, a 23-year-old Virginia Tech senior, opens fire on campus, killing 32 people in a dorm and an academic building in attacks more than two hours apart. Cho takes his life after the second incident.
Charles Carl Roberts IV, a milk truck driver armed with a small arsenal, bursts into a one-room schoolhouse and kills five Amish girls. He kills himself as police storm the building.
Jeffrey Weise, a 16-year-old student at Red Lake High School fatally shoots five students, a teacher, and a security guard and wounds seven others before taking his own life. Before his rampage at Red Lake, Weise kills his grandfather and his grandfather’s companion at their home on the Red Lake Indian Reservation.
Eric Harris and Dylan Klebold, students at Columbine High, open fire at the school, killing a dozen students and a teacher and causing injury to two dozen others before taking their own lives.
Eric Houston, a 20-year-old unemployed computer assembler, invades Lindhurst High School and opens fire, killing his former teacher Robert Brens and three students and wounding 10 others. He holds 85 students hostage for 8 1/2 hours before giving himself up.
Gang Lu, a graduate student in physics from China, shoots four people to death at the University of Iowa. Lu, who took his own life in the incident, was upset about not getting an academic honor. The dead included faculty members and the student who had won the honor. Two others were critically wounded.