Random killing, Netcafe refugee etc.

A 31 year old woman has been killed by 3 man (two unemployeed, one news paper salesman), who got to know each other through "underground employment service agency" (news) operated on internet. They plotted robbery together and decided to choose women because they are physically weaker. The woman was picked up randomly, kidnaped, killed and her properties were taken away.
There are a lot more recruiting advertisements in the same site. Some claims to help any types of revenge, some claims to do anything requested. But there is no specific laws that can stop the sites with underground agencies. In fact, they are not underground at all. WIth the help of search engines, one can easily find them.
One of the commentators on TV said that criminals like these 3 should be sentenced and excuted as soon as possible as exemplary punishment. This reminds me of critics on China's law system, by which heinous criminals are excuted as soon as within a month. Again, nobody make a big fuss when Saddam Hussein was excuted one month after being sentenced.
Research by Ministry of Health, Labour and Welfare shows that netcafe refugee, called labors without residence and stable job, amounts to 5400 (27% twenties, 23% fifties) in Japan. There are also comments saying that the number is even more than 5400. Netcafe owners claim that their customers are not refugee, maybe mainly because their losing business.
The average of income of these people in Tokyo is 110,000 yen per month, and 80,000 in Osaka. By absolute value, they are richer than a lot of people in many other industrial countries. But the rent in big cities is so hight that they can not affort an apartment, and because they don't have an address of their own, they can not find a permanant job. When they can not affort even staying at internet cafe, they will become the "true" homeless, living on the road, in the parks, and might be killed any time by hooligans.
Japan is changing from poor living environment to an unsafe one now.
There are about 150,000 "Mr. mon" (日本語記事) now in US, many having high education backgrounds. They still have hard time in the parks with the moms.