We need to ban all semiautomatic assault knives with a clip of more than 10". A 10" hunting knife is not required to kill a deer as they seem to fall dead by the side of the road on a regular basis.
Then we need to limit access to any and all assault knives to anyone under the age of 21 and then only with a ten day waiting period After a background check.
If anyone else there had had a registered single shot knife, they could have stopped this terrorist. Only after calling the cops and waiting an appropriate time and only then after asking if the terrorist planned to harm anyone else.
All could have been prevented if a sign had just been placed on the entrance door classifying the library as a knife free zone.
