Gotta tell ya, even the kiddie scissors can be used as a weapon, not well, but ...

In a previous life I was a legal NCO in the Army and got involved in some odd cases. One case involved guy, wife and her boyfriend. Hubby went to assault BF. After breaking a knife, Hubby grabs the nearest weapon, a pair of safety scissors. He proceeded to stab the BF 3 times in the forehead - with the blades apart. Sum total of that injury - 6 somewhat painful looking dents/bruises. No blood. Not even big bruises. What a doofus Hubby was.

And quite honestly, after loaning out probably enough office supplies to fill a good sized store, and usually not getting it back, I can feel for the librarian who tried to keep her scissors.