A view of the Arakawa River, which marks the boundary between Tokyo and Saitama Prefecture. Tokyo is on the left side of the photo and Saitama on the right. In the foreground are shelters built by homeless squatters who eke out a Grapes of Wrath existence on the edges of society, along the edge of the river along the edge of one of the most prosperous cities in the world.
The industrious homeless squatters who choose to make the effort to construct their own shelters along the river bank generally aren't subject to the same sort of official rousting received by those who choose to live in the heart of the city and sleep beneath overpasses in cardboard boxes. Part of the reason is "out of sight, out of mind". The rest of the reason, I suspect, is that they are living on a flood plain between the normal banks of the river and the high levees which line the river. In the spring and summer, there is an almost 100% certainty that the monsoon season will provide them with at least one torrent which will place their shelters under water, and perhaps wash them down to the sea.
Original photo is <here>