Boy (1969)

Both movies are about mistreated children. The titular character in Boy is put into constant danger (thrown in front of moving vehicles) and in that way is physically abused, basically. The children in Nobody Knows are abandoned by their mother. And both have really good child actor in leading role.

Both are about a family of criminals. The main difference is that family members in Shoplifters really care about each other, while the parents in Boy just straight up use their son for their own benefit.