http://www.youtube.com/watch?v=dDnpDNYp8Mw

Act of Union By Seamus Heaney 
I

To-night, a first movement, a pulse, 
As if the rain in bogland gathered head
To slip and flood: a bog-burst, 
A gash breaking open the ferny bed.
Your back is a firm line of eastern coast
And arms and legs are thrown
Beyond your gradual hills. I caress
The heaving province where our past has grown.
I am the tall kingdom over your shoulder
That you would neither cajole nor ignore.
Conquest is a lie. I grow older
Conceding your half-independant shore
Within whose borders now my legacy
Culminates inexorably.

II

And I am still imperially
Male, leaving you with pain, 
The rending process in the colony, 
The battering ram, the boom burst from within.
The act sprouted an obsinate fifth column
Whose stance is growing unilateral.
His heart beneath your heart is a wardrum
Mustering force. His parasitical
And ignorant little fists already
Beat at your borders and I know they're cocked
At me across the water. No treaty
I foresee will salve completely your tracked
And stretchmarked body, the big pain
That leaves you raw, like opened ground, again 

Through a dark tone and violent imagery this poem creates a conflicting unifying feeling.