People's angry faces and people's ignoring faces always make me think of situations in early childhood (1-3 years) where a child cries in anger or protest over wanting something, and the parents reprove or ignore the child -- I see this often in the supermarket, when a disappointed, crying child looks around at others, as if for support. Seems to me, these dreams recur because we feel there now has been some injustice done and no one rushes to the rescue.