Another Mass Knife Murder

From May 21, 2014 Fox News:

4 killed, dozens injured in Taiwan subway stabbing spree

TAIPEI, Taiwan – A university student wielding a knife attacked riders aboard a subway train in Taiwan's capital on Wednesday, killing four people and injuring at least 21 others, police and local media said.

The seemingly random attack occurred at about 4 p.m. at the start of the evening rush hour aboard a train on Taipei's Banqiao line, which leads to the city's southwestern suburbs.

It is amazing the damage that one person with a knife can cause, especially in a society where nearly everyone is disarmed.