"The Children of Leningradsky" (Andrzej Celiński, Hanna Polak, 2005)

I used part of this footage in the Solzhenitsyn video, and some people asked about it, so here's the full documentary. Unfortunately video quality is not the best. From Wiki: "The Children of Leningradsky (Polish: Dzieci z Leningradzkiego) is a 2005 Polish short documentary film about a community of homeless children living in the Leningradsky railway station in Moscow. Directed by Andrzej Celiński and Hanna Polak, it was nominated for an Academy Award for Best Documentary Short."