From "A Curse for a Nation"
by Elizabeth Barrett Browning
I heard an angel speak last night,
And he said 'Write!
Write a Nation's curse for me,
And send it over the Western Sea.'
I faltered, taking up the word:
'Not so, my lord!
If curses must be, choose another
To send thy curse against my brother.
'For I am bound by gratitude,
By love and blood,
To brothers of mine across the sea,
Who stretch out kindly hands to me.'
'Therefore,' the voice said, 'shalt thou write
My curse to-night.
From the summits of love a curse is driven,
As lightning is from the tops of heaven.'
You can read the rest of it, a sharp denunciation of American slavery, here.