This is the last song on Gaslight Anthem's Soon to be released "American Slang". 
It's really simple, just palm mute these power chords throughout the song. 
In the last chorus they start strumming openly. 
Hope you enjoy, one of my favorites off the new album.

INTRO: Bm F# G D G D A

 Bm                  F#
Don't write me no more letters
 G                   D
My mailbox is full of bombs
       G                 D           A
Between you and the kooks on my block
      Bm                    F#
I don't remember the good times
        G                    D
I wasn't there and you were kind
       G              D            A
And my wife has some dogs in our yard
     G                D          A        Bm 
And I cannot hold a candle for every pretty girl
       G                   D
We were strangers many hours
        A
And I missed you for so long
             Bm                  A       
When we were lions, lovers in combat
                G                          D-A-G
Faded like your name on those jeans that I burned
           D    A   
But I am older now
          Bm                G
And we did it when we were young
         D   A 
I am older now
          Bm                G
And we did it when we were young  

*Repeat the exact pattern as the first half of the song*
 
There are no reasons to believe
I buried my faith in an unmarked plot
With your heart and your clothes
When I find that I don't feel you or recall
I'll put your bones out in the yard
Someone else to be called and called by
And I cannot hold a candle for every pretty girl
We were strangers many hours
And I missed you for so long
When we were lions, lovers in combat
Faded like your name on those jeans that I burned
But I am older now
And we did it when we were young
I am older now
And we did it when we were young
I am older now
And we did it when we were young
I am older now

*A note, they hold out the last line of the chorus by playing*
         Bm    A             D 
And we did it when we were young