In case you haven’t heard http://mdn.mainichi.jp/national/news/20080609p2a00m0na007000c.html
I think there are several remarkable things about this case. First of all the guy drove all the way to Tokyo from nowhere Shizuoka to do this because he wanted maximum attention and or carnage? Secondly he sent text messages via cellphone to a website with updates on what he was doing. It is almost like he wanted someone to read that and stop him. Thirdly random attacks like this are not that uncommon here but usually only one or two people are injured or killed so those cases don’t get so much attention. I believe Japan has never been an Eden of peace free from these kinds of attacks, or that society is getting worse. There have always been crazy people doing bad things and there has been since the time of Cain and Able.
All I can do then is pray for those involved and for myself that I, nor anyone I know, meet our maker in such a manner, and if I ever witness such a scenario I wont run but will be able to provide some sort of comfort and aid.