Bill Bernstein’s best photograph: joy and humanity in a homeless centre

In the 1970s I lived in SoHo in New York, which is not far from the Bowery, but the two districts were like separate universes. SoHo was full of artists and creative types but the Bowery was known as the place where you ended up when you were at the bottom of the barrel. There were a lot of flophouses and a lot of alcoholism and drug use. It was the darkest place in New York City for a long time.