They are sick, they are poor and they die
By the thousands and we look away
They are wolves at the door
And they're not gonna move us
Or so get in our way

'Cause we don't have the time
Here at the top of the world
Feeling alright here at the top of the world
We hold our own by keeping our hearts cold

Different God, darker skin
They are just not a burden
That we like to bear
They are living in sin
There are so many reasons for us not to care

But I'm feeling alright here at the top of the world
Doing just fine here at the top of the world
We've learned, money matters most
So we keep our cards held close
Here at the top of the world

We hold our own
By keeping our hearts cold
And we've learned what matters most
So we keep our hearts cold

They are no one
They are nowhere, they are
Not our problem
No one seeing
Non existent

If we keep our hearts cold
They are no one, they are nowhere

We are blind to the suffering of others and we choose to ignore it?

That's what I think it means as well.