This is a great song and a lot of the other chord charts are close but not 
perfect. I'm mostly just doing this so I can easily transpose the key. This is my 
first submission so hopefully I wont f it up.
Key of G

Intro: (single notes) G F# B, E D G, C B E, A D

G (320003@1)      D (xx0232@1)When I was a young boy
    Em (022000@1)       G (320003@1)          CMy (x32010@1)father took me into the city
    G (320003@1)            Am (x02210@1)-  DTo (xx0232@1)see a marching band
           G (320003@1)             DHe (xx0232@1)said, "Son, when you grow up
        Em (022000@1)       G (320003@1)             C (x32010@1)Would you be the savior of the broken
      G (320003@1)            Am (x02210@1)-  DThe (xx0232@1)beaten and the damned??
           G (320003@1)        DHe (xx0232@1)said, "Will you defeat them
      Em (022000@1)         G (320003@1)         CYour (x32010@1)demons and all the non-believers
      G (320003@1)                 Am (x02210@1)-  DThe (xx0232@1)plans that they have made?
        G (320003@1)            D (xx0232@1)Because one day, I'll leave you
    Em (022000@1)        G (320003@1)             CA (x32010@1)phantom to lead you in the summer
    G (320003@1)              Am (x02210@1)-  DTo (xx0232@1)join the Black Parade
G (320003@1)name="chord_xx0232@1">D Em (022000@1)name="chord_320003@1">G C (x32010@1)name="chord_320003@1">G Am (x02210@1)name="chord_xx0232@1">D

G (320003@1)      D (xx0232@1)When I was a young boy
    Em (022000@1)       G (320003@1)          CMy (x32010@1)father took me into the city
    G (320003@1)            Am (x02210@1)-  DTo (xx0232@1)see a marching band
           G (320003@1)             DHe (xx0232@1)said, "Son, when you grow up
        Em (022000@1)       G (320003@1)             C (x32010@1)Would you be the savior of the broken
      G (320003@1)            Am (x02210@1)-  D (xx0232@1)-  GThe (320003@1)beaten and the damned?? 
G (320003@1)name="chord_xx0232@1">D Em (022000@1)name="chord_320003@1">G C (x32010@1)D (xx0232@1)*Verse 1*
     G (320003@1)             DSometimes (xx0232@1)I get the feeling
       Dm (xx0231@1)          CShe's (x32010@1)watching over me
                     G (320003@1)               DAnd (xx0232@1)other times I feel like I should go
     G (320003@1)                    DAnd (xx0232@1)through it all, the rise and fall
     Dm (xx0231@1)            CThe (x32010@1)bodies in the streets
                         G (320003@1)              DAnd (xx0232@1)when you're gone we want you all to know

*Chorus*
             G (320003@1)       D (xx0232@1)      EmWe'll (022000@1)carry on, we'll carry on
   G (320003@1)             C (x32010@1)           
And though you're dead and gone, believe me
      D (xx0232@1)                G (320003@1)      D (xx0232@1)     EmYour (022000@1)memory will carry on, we'll carry on
   G (320003@1)     C (x32010@1)      
And in my heart, I can't contain it
    DThe (xx0232@1)anthem won't explain it

*Verse 2*
   G (320003@1)                  DA (xx0232@1)world that sends you reeling
      Dm (xx0231@1)          CFrom (x32010@1)decimated dreams
                  G (320003@1)               DYour (xx0232@1)misery and hate will kill us all
    G (320003@1)                   DSo (xx0232@1)paint it black and take it back
         Dm (xx0231@1)              CLet's (x32010@1)shout it loud and clear
                 G (320003@1)              DDefiant (xx0232@1)to the end, we hear the call

*Chorus*
          G (320003@1)       D (xx0232@1)    Emto (022000@1)carry on, we'll carry on
      G (320003@1)          CAnd (x32010@1)though you're dead and gone, believe me
      D (xx0232@1)               G (320003@1)     D (xx0232@1)      EmYour (022000@1)memory will carry on, we'll carry on
   G (320003@1)             C (x32010@1)       
And though you're broken and defeated
      D (xx0232@1)             
Your weary widow marches

*Bridge*
B (x2444x@1)                                EmOn (022000@1)and on we carry through the fears. (Ahh Ahh Ahh)
B (x2444x@1)                           Em (022000@1)Disappointed faces of your peers. (Ahh Ahh Ahh)
 C (x32010@1)        
Take a look at me
                           G'Cause (320003@1)I could not care at all
          DDo (xx0232@1)or die, you'll never make me
Em (022000@1)              G (320003@1)                   C (x32010@1) Because the world, will never take my heart.
          G (320003@1)
Go and try, you'll never break me
C (x32010@1)            D (xx0232@1)                   G (320003@1)We want it all, we wanna play this part.
               D (xx0232@1)              EmI (022000@1)won't explain or say I'm sorry
             G (320003@1)                  CI'm (x32010@1)unashamed, I'm gonna show my scar
             GGive (320003@1)a cheer, for all the broken.
C (x32010@1)         D (xx0232@1)                    A*(Key (x02220@1)change to A)*
 Listen here, because it's who we are.
              E (022100@1)             F#mI'm (244222@1)just a man, I'm not a hero
          A (x02220@1)                    DJust (xx0232@1)a boy who had to sing this song
          AJust (x02220@1)a man, I'm not a hero
E (022100@1)I   don't   care!

*Chorus*
             A (x02220@1)     E (022100@1)      F#mWe'll (244222@1)carry on, we'll carry on
  A (x02220@1)              D (xx0232@1)       
And though you're dead and gone, believe me
      E (022100@1)                A (x02220@1)    E (022100@1)      F#mYour (244222@1)memory will carry on, we'll carry on
  A (x02220@1)              D (xx0232@1)    
And though you're broken and defeated
        E (022100@1)                 AYou're (x02220@1)weary widow marches on(do or die,)
E (022100@1)you'll never make me
F#m (244222@1)             A (x02220@1)                   D (xx0232@1)Because the world, will never take my heart.

Go and try, you'll never break me
E (022100@1)                                  A (x02220@1)We want it all, we wanna play this part
(We'll carry on)
         E (022100@1)  
Do or die, you'll never make me
F#m (244222@1)             A (x02220@1)                   D (xx0232@1)Because the world, will never take my heart
                
Go and try, you'll never break me
E (022100@1)                                  A (x02220@1)We want it all, we wanna play this part
                        (We'll carry on)

It's long I know but I hate having to stop and scroll back up cause I forgot the 
verse/chorus etc... I think this is 100%, some of the chords might be in different 
voicings but whatevs. Enjoy!