MURDER THAT HAPPENED AT SCHOOL USA, 20 YEARS

No one thought, learning activities at Sandy Hook Elementary School, Connecticut will turn into a tragedy. Friday morning was cold, the kids could not wait for the Christmas holidays stuck in a horrible situation.

Two shooters rampant, memberondongkan guns at them. At least 27 people have been killed, 18 of them boys plain innocent.

This is not the first time the school shootings occurred in the United States, a country that legalized firearms. As published by CNN, there were at least 12 shooting incidents in the past 20 years.

Here's the list:

1. February 27, 2012 - Chardon High School, Chardon, Ohio
A student, Daniel Parmertor (16) was killed while four others were injured when his friend TJ Lane fired the gun. A day later, the death toll increased, Demetrius Hewlin (16) died from his wounds were too severe. Meanwhile, Russell King Jr. (17) is still dead, but his brain was pronounced dead.

2. October 2, 2006 - West Nickel Mines School, Nickel Mines, Pennsylvania Charles Roberts IV (32) 11 girls hostage. Five of the victims were killed, six others wounded. Actors later killed himself.1

3. November 8 2005 - Campbell County Comprehensive High School, Jacksboro,
 Tennessee A 15-year-old student shot and two assistant principals. One person was killed, another seriously injured.

4. March 21, 2005 - Red Lake High School, Red Lake, Minnesota
Jeff Weise (16) killed his grandfather and one other adult, four fellow students, a teacher and a security guard. He then committed suicide.

5. March 5, 2001 - Santana High School, Santee, California
Charles "Andy" Williams (15) killing two friends and injuring 13 others. Williams was convicted in 2002 and sentenced to 50 years

6. April 20 1999 - Columbine High School, Littleton, Colorado 
Eric Harris (18) and Dylan Klebold (17) killed 12 classmates and a teacher before killing themselves in the school library.

7. May 21, 1998 - Thurston High School, Springfield, Oregon
After killing his parents own, the next day, Kip Kinkel (15) killed two fellow students in the school cafeteria. He was sentenced to 112 years prison.

 8. March 24, 1998 - Westside Middle School, Jonesboro, Arkansas. 
Andrew Golden (11) and Mitchell Johnson (13) attacked his friends and teachers, five were killed. They were detained at the juvenile prison and was released at the age of 21 years.

1.9 December 1997 - Heath High School, West Paducah, Kentucky
Michael Carneal (14) fired a weapon into the school spirit, killing three schoolgirls. He was sentenced to life imprisonment.

10. February 2, 1996 - Frontier Junior High School, Moses Lake, Washington
 Barry Loukaitis (14) bring a gun to school, killing two friends and a teacher. Sentenced for life.

11. May 1, 1992 - Lindhurst High School, Olivehurst, California.
Eric Houston, students drop out of school aged 20 years suddenly went old school. Killed a former teacher and three students. He was sentenced to death.

12. February 26, 1992 - Thomas Jefferson High School, Brooklyn, New York


 A 15-year-old student shot and killed two colleagues. Actors, Kahlil Sumpter and new jail-free in 1998.

Most victims:

1927 Still according to CNN, the highest death toll in school murder incident occurred on May 18, 1927 at the Bath Consolidated Schoolhouse, Michigan. When a farmer Andrew Kehoe detonated two bombs at the school, killed himself, six adults and 38 children. Also there are interesting. On February 22, 1978, Everett High School in Lansing, Michigan. Roger Needham who was then 15-year-old student kills bully who often posted it. After four years of being held in juvenile prison, he went to school mencaoai medical degree in mathematics and a lecturer at Mussouri and New York.