We all know that Columbine had an armed sheriff's deputy on duty at the time of shooting. Virginia Tech had armed police on duty. Ft Hood had dozens of guards and MPs not to mention the trained military who were shot.
We also know that there was an armed civilian at the Tucson shooting who stayed inside the Walgreen's store until the unarmed people wrestled the gun away from Loughner. He later said he almost came out but then his story changed several more times. It was the unarmed people, including an elderly lady, who held Loughner until the police arrived.
In almost all shootings, its the police who stop the shooter or the shooter kills himself. In searching, I've found only one case of a civilian and one case of an off duty police officer taking down a shooter. There are also occasional cases of people disarming home invaders but, since this is not a second amendment issue, those stories have nothing at all to do with the question of armed police at schools.
Since having armed guards has never helped before, why do gun nuts believe that will change?
Do gun nuts want armed guards at other places as well? Churches? Restaurants? There have been shootings at both so should there be armed guards there as well?
"We all know" that the armed Sheriff's Deputy on duty at Columbine that day exchanged gunfire with Eric Harris, the Sheriff's Deputy called for backup, and the motorcycle cop who responded joined the Sheriff's Deputy in exchanging gunfire with both Eric Harris and Dylan Klebold, then they both began evacuating students as the SWAT team arrived.
"We all know" that Virginia Tech, like most large universities, is like a city within a city, and the "armed police on duty" were at the University police station when the shooting started. The police were not inside the building where the shootings took place, and it took the police over 8 minutes to respond to the initial 911 call.
"We all know" that the military police at military installations are virtually the ONLY military that are armed and on-duty 24/7/365. The mass murderer at Ft. Hood was an Army officer, and the military police at Ft. Hood responded to the shootings not unlike any other civilian police department would.
The only thing worse than your "research" is your dishonesty, "Luddly". Here are some FACTS for you:
Most multiple-victim shootings occur in gun-free zones even within states that have concealed-carry laws: public schools, churches, Sikh temples, post offices, the movie theater where James Holmes committed mass murder, and the Portland, Ore., mall where a nut starting gunning down shoppers a few weeks ago.
1. At the recent Portland mall shooting, concealed-carry-holder Nick Meli hadnt noticed that the mall was a gun-free zone. He pointed his (otherwise legal) gun at the shooter as he paused to reload, and the next shot was the attempted mass murderer killing himself. (Meli aimed, but didnt shoot, because there were bystanders behind the shooter.)
2. Mayan Palace Theater, San Antonio, Texas, this week: Jesus Manuel Garcia shoots at a movie theater, a police car and bystanders from the nearby China Garden restaurant; as he enters the movie theater, guns blazing, an armed off-duty cop shoots Garcia four times, stopping the attack. Total dead: Zero.
3. Winnemucca, Nev., 2008: Ernesto Villagomez opens fire in a crowded restaurant; concealed carry permit-holder shoots him dead. Total dead "innocents": Two.
4. Appalachian School of Law, 2002: Crazed immigrant shoots the dean and a professor, then begins shooting students; as he goes for more ammunition, two armed students point their guns at him, allowing a third to tackle him. Total dead "innocents": Three.
5. Santee, Calif., 2001: Student begins shooting his classmates as well as the trained campus supervisor; an off-duty cop who happened to be bringing his daughter to school that day points his gun at the shooter, holding him until more police arrive. Total dead "innocents": Two.
6. Pearl High School, Mississippi, 1997: After shooting several people at his high school, the student heads for the junior high school; assistant principal Joel Myrick retrieves a .45 pistol from his car and points it at the gunmans head, ending the murder spree. Total dead "innocents": Two.
7. Edinboro, Pa., 1998: A student shoots up a junior high school dance being held at a restaurant; restaurant owner pulls out his shotgun and stops the gunman. Total dead "innocents": One.
There are a few examples for you, "Luddly". So how does that shoe leather taste?