‘I can wipe out a total of 470 disabled individuals’: read disturbing letter by man accused of mass stabbing at Japanese care facility
Hatred appears to be what fueled Satoshi Uematsu, the young Japanese man who went on a stabbing rampage, killing 19 people Tuesday at a facility for the mentally disabled where he had been fired. Months earlier, he reportedly gave a letter to Parliament outlining the bloody plan. A translation follows:

Dear Lower House Speaker Tadamori Oshima,
Thank you very much for reading this letter. I can wipe out a total of 470 disabled individuals.
I am fully aware that my remark is eccentric. However, thinking about the tired faces of guardians, the dull eyes of caregivers working at the facility, I am not able to contain myself, and so I decided to take action today for the sake of Japan and the world.
My reasoning is that I may be able to revitalise the world economy and I thought it may be possible to prevent World War III.
I envision a world where a person with multiple disabilities can be euthanized, with an agreement from the guardians, when it is difficult for the person to carry out household and social activities.