Just ignore it. Killings with knives don’t count with the mainstream media unless it is an illegally obtained knife in the U.S.
On December 14th 2012 the school shooting at Newtown Connecticut claimed the lives of 28 people.
On the same day:
A man wielding a knife attacked students Friday at a school in central China, leaving 22 children and one adult injured, according to state-run media reports.
The attack occurred at the gate of an elementary school in the village of Chengping, in Henan Province.
This story was barely mentioned.
http://www.cbsnews.com/news/china-school-knife-attack-leaves-23-injured/
Yup. But it is surely significant that the Chinese knife attack resulted in a lot of injuries by no deaths.
It is just so much harder to kill a bunch of people with a knife versus a gun.