A film I haven't seen in years is The Champ starring John Voight, the part that brought a lump to my throat was when the little boy was crying "Don't die Champ, don't die".
Although not a film there was an episode of Challenge Anneka a few years ago where she took some builders to renovate an orphanage in Romania, the conditions the children and babies were living in would have melted the hardest of hearts.