The Clash - Police On My Back

CHORD CHART:

|--5-------3--------5-----|
|--7-------3--------5-----|
|--7-------4--------6-----|
|--7-------5--------7-----|
|--5-------5--------7-----|
|--5-------3--------5-----|
    D       G        A


Riff 1
(Can be played with barred D)
|-----------------------|
|-7---7--7----7----|
|----7--7---7----7-|
|-----------------------|
|-----------------------|
|-----------------------|

Riff 2 --- This comes in behind Riff 1 after the second chord change from D to G, and continues until the verse
(Can be played with barred G)
|--------------------------------------------------|
|-3---3--3----3------3---3---3----3b----|
|----4--4---4----4------4---4---4---------|
|--------------------------------------------------|
|--------------------------------------------------|
|--------------------------------------------------|

Rythm 1: Dx6 Gx6 (slight palm mute)  

Rythm 2: Ax12 Gx12, but same time frame as Rythm 1

SONG:
INTRO:
Riff 1 x3.5 (only play 4 notes the last time)
Rythm one comes in, goes until start of verse, Riff 2 (x3) comes in when Intro riff  1 ends, goes till start of verse

VERSE: Rythm 1 until chorus

CHORUS: Rythm 2. Riff 1 is played while A is played, Riff 2 is played while G is played

CHORUS OUTRO: Rythm 1 until verse, with Riff 1 until verse as well

NOTE: There are a few parts that don't follow the exact song structure, but it is obvious which riffs and rythm parts they use, just fill in the blanks.