Ohio school shooting shines light on past tragedies

A third victim has died after yesterday's deadly shooting at an Ohio high school, according to ABC News.

Demetrius Hewlin was pronounced dead at Ohio's MetroHealth Medical Center.  

Two other students died and two were injured Monday morning when a teenager, whom witnesses identified as T.J. Lane, opened fire in the cafeteria at the school, Reuters reported. Russell King, Jr., 17, was officially declared dead earlier on Tuesday. The first victim, Daniel Parmertor, died within hours of being shot by the alleged gunman, a fellow classmate of both boys. 

Lane, according to classmates, had become reserved and quiet in recent years. Classmate Nate Mueller, who was sitting with the three students shot during the ordeal, told ABC News, Lane was, "a quiet kid. Freshman year he got into a 'goth' phase and didn't talk to that many people anymore. He never egged anybody on. He just went about his business."

Another student, Lexi Joy, told ABC News, she passed Lane in the hallway minutes before the shooting. She said they exchanged a smile, and that was it. "He didn't seem any different. He seemed just like he'd be on a normal day," Joy said. "He didn't show any expression on his face. He was just TJ."

More from GlobalPost: T.J. Lane, Ohio's high school shooting gunman, has been identified (VIDEO) (UPDATE)

Violence in American schools seems to be a trend that never goes away. As the MSNBC article, "10 Myths About School Shootings" points out, there is no profile, no "snap" moment, no one thing that can trigger, or predict who will turn violent and when. Some of the most violent school shootings came from random acts, or those you would never expect.

Here is a look back at school shootings in the United States.

Virginia Tech, April 16, 2007

Seung -Hui Cho, a student at the school, killed 32 people and wounded many more in the deadliest school shooting in American history. He then shot and killed himself. 

Lancaster County, PA, October 2, 2006

Thirty-two year old Charles Carl Roberts, entered an Amish school in Nickel Mines, PA, where he took 10 girls hostage. He later killed five of the girls, before killing himself. 

Cazenovia, Wisconson, October 6, 2006

On October 6, 15 year old Eric Hainstock entered his school where he shot and killed his principal, John Klang, one day after Klang gave Hainstock a disciplinary warning for having tobacco on school property.

Red lake Indian Reservation, March 21, 2005

Jeff Weise, who was 16 at the time, shot five classmates, one teacher and one unarmed school guard. Earlier in the day Weise had killed both his grandfather and his grandfather's companion. Weise then killed himself. 

Columbine High School, April 20, 1999

Eric Harris and Dylan Klebold both entered Columbine High and killed 12 classmates and one teacher, before turning the guns on themselves. Twenty-three people were also injured in the attack that is often remembered as one of the worst school massacres in U.S. history.

More from GlobalPost: Washington boy, 9, could face charges in shooting of 8-year-old classmate

While events like the Ohio school shooting make school violence seem commonplace, MSNBC also points out, gun violence in schools is still rare saying, " Even including the more common violence that is gang-related or dispute-related, only 12 to 20 homicides a year occur in the 100,000 schools in the U.S. In general, school assaults and other violence have dropped by nearly half in the past decade."

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