Theme The story tells us how racial prejudice can prevent us reaching,touching and connecting with each other.This invisible wall exists between the white and the black and hampers their free communication and full understanding.It is not just a wall imposed by apartheid laws,but a wall deeply rooted in their hearts.Theme The story tells us how racial prejudice can prevent us reaching, touching and connecting with each other. This invisible wall exists between the white and the black and hampers their free communication and full understanding. It is not just a wall imposed by apartheid laws, but a wall deeply rooted in their hearts