Since December 2015, there have 10 incidents that killed 10 or more people. That’s more than there was in 30 years between 1982 and 2011. And five of the 10 deadliest mass shootings in modern American history have all happened in the last five years.

It’s important to understand how we got where we are today. In 1966, the unthinkable happened: a madman climbed the University of Texas clock tower and opened fire, killing more than a dozen people. It was the first mass shooting in the age of television, and it left a real impression on the country. It was the kind of terror we didn’t expect to ever see again. But around 30 years ago, we started to see an uptick in these types of shootings, and over the last decade they’ve become the new norm.
In July 2012, a gunman walked into a darkened theater in Aurora and shot 12 people to death, injuring 70 more. One of his weapons was an assault rifle. The sudden and utterly random violence was a terrifying sign of what was to come.
In December 2012, a young man entered an elementary school in Newtown and murdered six educators and 20 young children. One of his weapons was an assault rifle. Watching the aftermath of these young babies being gunned down was heartrending.
In June 2016, a gunman entered a nightclub in Orlando and sprayed revelers with gunfire. The shooter fired hundreds of rounds, many in close proximity, and killed 49. Many of the victims were shot in the head at close range. One of his weapons was an assault rifle.
Last month, a gunman opened fire on concertgoers in Las Vegas, turning an evening of music into a killing field. All told, the shooter used multiple assault rifles fitted with bump-fire stocks to kill 58 people. The concert venue looked like a warzone.
Over the weekend in Sutherland Springs, 26 were killed by a gunman with an assault rifle. The dead ranged from 17 months old to 77 years. No one is spared with these weapons of war. When so many rounds are fired so quickly, no one is spared. Another community devastated and dozens of families left to pick up the pieces.
These are just a few of the many communities we talk about in hushed tones—San Bernardino, Littleton, Aurora, towns and cities across the country that have been permanently scarred.

High-capacity ammunition magazines are the common thread that runs through most mass shootings: giving attackers the ability to fire numerous bullets without reloading....
Here are just 10 of the U.S. mass shootings that involved high-capacity ammunition magazines.
1. Hartford Distributors
On August 3, 2010, concealed handgun permit holder Omar Thornton, armed with a Sturm, Ruger SR9 semi-automatic pistol and high-capacity ammunition magazine, opened fire on his co-workers at beer distributor Hartford Distributors in Manchester, CT, killing eight and wounding two before taking his own life.
2. Fort Hood
On November 5, 2009, Nidal Hasan, armed with an FN 5.7 semi-automatic pistol and 30- and 20-round high-capacity ammunition magazines, killed 13 and wounded more than 30 at the Fort Hood military base in Fort Hood, TX.
3. Virginia Tech
On April 16, 2007, Seung-Hui Cho, armed with a Glock 19 semi-automatic pistol, Walther P22 semi-automatic pistol, and 15-round high-capacity ammunition magazines, killed 32 and wounded 17 on the campus of Virginia Tech in Blacksburg, VA, before taking his own life.
4. Xerox Office Building
On November 2, 1999, Byran Uyesugi, armed with a Glock 17 semi-automatic pistol and three 15-round high-capacity magazines, opened fire at the Xerox Office Building in Honolulu, HA, killing seven.
5. Wedgewood Baptist Church
On September 15, 1999, Larry Gene Ashbrook, armed with a Sturm, Ruger P85 9mm semi-automatic pistol and three 15-round high-capacity magazines, opened fire at Wedgewood Baptist Church, killing seven and wounding seven before taking his own life.
6. Columbine
On April 20, 1999, Eric Harris and Dylan Klebold, armed with an Intratec TEC-DC9 semi-automatic assault pistol, Hi-Point 9mm semi-automatic Carbine, two Savage shotguns, and high-capacity ammunition magazines, killed 13 and wounded 23 at Columbine High School in Littleton, CO, before taking their own lives.
7. Long Island Railroad
On December 7, 1993, Colin Ferguson, armed with a Sturm, Ruger P89 9mm semi-automatic pistol and four 15-round high-capacity ammunition magazines, opened fire on Long Island Railroad commuters, killing six and wounding 19.
8. Pettit & Martin, 101 California
On July 1, 1993, Gian Luigi Ferri, armed with two Intratec TEC-DC9 semi-automatic assault pistols, a 45 caliber semi-automatic pistol, and 40- to 50-round high-capacity ammunition magazines, opened fire at the San Francisco, CA, law firm of Pettit & Martin, killing eight and and wounding six before taking his own life.
9. Luby's Cafeteria
On October 16, 1991, George Hennard, armed with a Sturm, Ruger P89 semi-automatic pistol, Glock 9mm semi-automatic pistol, and 17- and 15-round magazines, killed 23 and wounded 20 at Luby's Cafeteria in Killeen, TX, before taking his own life.
10. Stockton
On January 17, 1989, Patrick Purdy, armed with an AK-47 semi-automatic assault rifle, Taurus 9mm semi-automatic pistol, an unidentified semi-automatic pistol, and a 75-round high-capacity drum magazine, opened fire on grade school children at Cleveland Elementary School in Stockton, CA, killing five and wounding 30 before taking his own life.

Americans who know nothing else about firearms are all too familiar with the name AR-15. It’s the semi-automatic weapon that murderers have used in many of the most notorious and highest-casualty gun killings of recent years: Aurora, Colorado. Newtown, Connecticut. Orlando, Florida. San Bernardino, California. Now, with modified versions, in Las Vegas, Nevada, and Sutherland Springs, Texas.

The modern era of mass-casualty public shootings was inaugurated when James Huberty decided to go “hunting for humans” with an UZI Carbine at a McDonald’s restaurant in San Ysidro, California on July 18, 1984....
And since that horrific attack at McDonald’s in 1984 that left 21 dead, including numerous children, and 19 wounded, the list of towns and institutions that will forever be associated with mass shootings continues to grow: Cleveland Elementary School in Stockton, California; Columbine High School in Littleton, Colorado; a hunting camp in Birchwood, Wisconsin; a mall in Omaha, Nebraska; an IHOP in Carson City, Nevada; a movie theater in Aurora, Colorado; Sandy Hook Elementary School; a military installation in Chattanooga, Tennessee; Planned Parenthood; and now San Bernardino.

Since Uvalde, just over a week ago, there have been 20 other mass shootings in America, each with four or more people killed or injured, including yesterday at a hospital in Tulsa, Oklahoma. A shooter deliberately targeted a surgeon using an assault weapon he bought just a few hours before his rampage that left the surgeon, another doctor, a receptionist, and a patient dead, and many more injured. That doesn’t count the carnage we see every single day that doesn’t make the headlines.

Among the six deadliest mass shootings in the last six years, the only one not carried out with an AR-15 style rifle was the Orlando nightclub attack two years ago that left 49 dead. The gunman, Omar Mateen, had a Sig Sauer MCX semiautomatic rifle, which shares features with the AR-15, though it functions via a different semiautomatic design — and is just as deadly. All of these military-style semiautomatic weapons have something else in common. They have been heavily marketed as home-defense and marksmanship weapons, and their sales have been a major driver of profits for gun manufacturers over the past two decades.

The Glock pistol reportedly used by alleged South Carolina mass killer Dylann Roof stands as a stark example of the gun industry’s marketing of increased lethality. Since the mid-1980s, increased firepower and capacity have defined the products of the gun industry — of both U.S. and foreign manufacture.
Glock pistols have been part of the arsenals of some of the most infamous mass shooters in the United States, including the 2007 Virginia Tech shooting, which left 33 dead and 17 wounded, as well as the January 2011 attack at a Tucson, Arizona Safeway parking lot by Jared Loughner which left six dead and 13 wounded — including then-U.S. Representative Gabrielle Giffords. Examples of additional mass shootings involving Glock pistols include:
* The 2012 attack at a Sikh Temple in Oak Creek, Wisconsin that left seven dead (including the shooter).
* The 2012 mass shooting at the Century Aurora 16 movie theater that left 12 dead.
* A 1999 shooting at a Xerox Office Building in Honolulu, Hawaii, that left seven dead.
* A 1999 shooting in Springfield, Oregon, where the 15-year-old shooter killed his parents, and then went to school where he killed two of his classmates.
* A 1998 workplace shooting at the Connecticut State Lottery Headquarters where the shooter killed four before taking his own life.
* The 1991 shooting at Luby’s Cafeteria in Killeen, Texas that left 24 dead (including the shooter).

A vast majority of guns used in 19 recent mass shootings were bought legally and with a federal background check. At least nine gunmen had criminal histories or documented mental health problems that did not prevent them from obtaining their weapons.

The N.R.A. calls the AR-15 the most popular rifle in America. The carnage in Florida on Wednesday that left at least 17 dead seemed to confirm that the rifle and its variants have also become the weapons of choice for mass killers.

The left blames white nationalism. The right blames mental illness. Neither explains that it happens often here and nowhere else. But mass shootings account for a very small number of gun deaths: Many more women are killed in their home by guns. Men used to just knock women around, but rarely did death result. But with a gun on hand, there's a death. Half of the gun deaths are suicide. The proliferation of guns is a huge problem, but its cause is not lack of regulations. There were lots of regulations in the '70s when this started; going postal and school shootings started in the '70s.

In the wake of three high-profile school shootings in one week, the last committed by an apparently law-abiding gun owner until he pulled the trigger executing five Amish schoolgirls, America will once again go through the now-predictable exercise of trying to identify any single, possible factor for these gun deaths—except for the guns themselves. On television news, anchors refer to the school shootings as “unavoidable,” as if such mass shootings are the bastard children born of hurricanes and snowstorms.

I can't even think about this movie. I don't WANT to think about it because if I think about it I will have to face an ugly truth that has been gnawing through my head... This started out as a documentary on gun violence in America, but the largest mass murder in our history was just committed — without the use of a single gun! Not a single bullet fired! No bomb was set off, no missile was fired, no weapon (i.e., a device that was solely and specifically manufactured to kill humans) was used. A boxcutter! — I can't stop thinking about this. A thousand gun control laws would not have prevented this massacre. What am I doing?

(1) Every year, in this nation of more than a quarter billion individuals, a few thousand (three quarters of them suicides) are killed with firearms, while millions of Americans successfully use personal weapons to save themselves and others from injury or death. Guns save many, many times more lives than they take. (2) In every jurisdiction that has made it even microscopically easier for individuals to carry weapons, violent crime rates have plummeted by double-digit percentages. Vermont, where no permission of any kind is required to carry a gun, is named in many respectable surveys as the safest state to live in. (3) More telling and urgent, every episode of genocidal mass murder in history has been preceded by a period of intense disarming of the civil population, usually with 'public safety' or 'national security' as an excuse. According to Amnesty International — hardly a gang of right wing crazies — in the 20th century alone (in events entirely separate from war), governments have slaughtered more than a hundred million people, usually their own citizens.