I wasn't able to watch the whole video as my internet is presently too slow, but yes, there is a sad amount of homeless people in the US. I see them a lot in the cities. Take a look at this city: The Motor City...my parents lived there when they were first married and my dad says he had to have a security person from his workplace escort him to and from his car every day. This city, however, is now a lot worse. 47% of the people (adults) living there are illiterate. (I wonder what sort of health care they have! Most of them don't even speak English.)
One place we lived at in the country had ditch hunters around - people who drive slowly along the ditch hunting for small critters like rabbits, etc., just to get something to eat. I personally know several homeless people...they live out of their cars. There are many more examples.