Just checked the thread at DU again. No bobo, homelessness did NOT start under Reagan.
Yes, as a matter of fact, it did. Prior to Reagan there were lots of winos, hobos, and bums, but no homeless.
The sight is seared, seared into my memory of hundreds, maybe thousands, of bums lying on the sidewalks, under pieces of cardboard, during a tour of The Bowery in the early 60s. At that time, no one had heard the term "homeless people".
When you only have the newspapers and fifteen minutes of broadcast news per day, bums and drunks are hardly important enought to mention.