This is one of the best songs on their new disc. It is played in dropped D tuning. I'm not sure of the effect that Marcos uses on the screaming part of the bridge, but the chords should be correct.

intro:
2222--0000---2222---0000---55555555---7777---0000---------------------
2222--0000---2222---0000---55555555---7777---0000--------------------- (x3)
2222--0000---2222---0000---55555555---7777---0000---------------------

verse same as intro (palm-muted)

chorus #1 (you didn't know thought we was new on the scene) same as intro

2222---55---2222---55---7777---00---7777---00------
2222---55---2222---55---7777---00---7777---00------(chorus #2)
2222---55---2222---55---7777---00---7777---00------
BOOM here comes the BOOM 
ready or not here come the boys from the south

bridge (is that all you got? i'll take your best shot)
--2----0-------------------------------
-2----0--------------------------------(x8 i think)
2----0---------------------------------

screaming part with that effect
2---0----------------------------------
2---0----------------------------------(x4)
2---0----------------------------------

then play the chorus like this twice listen to the song for timing:
222---222---7777---00---7777---00-------------------------
222---222---7777---00---7777---00-------------------------
222---222---7777---00---7777---00-------------------------

then the normal chorus x2 (ending on  the last chord of the chorus)