Originally Posted by
squeeze
This is Japan, a country with a pacifist constitution, some of the strictest firearms and knife laws, the lowest murder rate in the developed world, one of the lowest crime rates in the whole world, and has a homogenous and unifying culture utterly different from the rest of the world. It also accepts almost zero asylum seekers and minimal economic migration.
If a knife massacre can happen in Japan, it can happen anywhere. Nothing can prevent madmen in open societies.