Columbine High School Had Armed Guard During Massacre In 1999
"That's the point," said Sen. Dianne Feinstein (D-Calif.) at a press conference on Friday afternoon, denouncing LaPierre's solution. "There were two armed law enforcement officers at that campus, and you see what happened. Fifteen dead ... 23 wounded."
http://www.huffingtonpost.com/2012/12/21/columbine-armed-guards_n_2347096.html
...mz boxer did not tell us how many more would have been killed if those policemen had not been there. It wasn't as if the shooters had reached their "bag limit" and was going home. BTW: The federal assault weapons ban passed in 1994 didn't work either.

Liberals are like a "Slinky". Totally useless, but somehow ya can't help but smile when you see one tumble down a flight of stairs!