For the majority of the first half of the song, the piccolo bass riff played higher and the actual 4-string 
bass riff played lower are played simultaneously

[Intro]

0:00 - 0:08

(I believe the meter is 9/8)

G|-0--0h10h12--0-0h10h12-0--0h10h12-0-0h10h12-0-0h10h12------------------------|
D|-----------------------------------------------------------------------------|
A|-----------------------------------------------------------------------------|
E|-----------------------------------------------------------------------------|x2

[Intro riff played lower]

0:08 - 0:55

G|------------------------------------------------------------------------------|
D|------3h5--------3h5--------3h5------3h5-----3h5------------------------------|
A|------------------------------------------------------------------------------|
E|-3--3--------3-3-------3--3-------3-3----3-3----------------------------------|x12


['Wow, you've just exploded...']

0:55 - 1:26

G|------------------------------------------------------------------------------|
D|------------5--5-----5----5--5-5-5--------------------------------------------|
A|------------------------------------------------------------------------------|
E|-3-1-3-4-3--------------------------------------------------------------------|x8

['And now your nightmare is coming true...']

1:27 - 1:42

G|-----------------------------------------------------------------------------|
D|-0--0h10h12--0-0h10h12-0--0h10h12-0-0h10h12-0-0h10h12------------------------|
A|-----------------------------------------------------------------------------|
E|-----------------------------------------------------------------------------|x4

['We are polarised...']

1:43 - 1:58

G|------------------------------------------------------------------------------|
D|------------5--5-----5----5--5-5-5--------------------------------------------|
A|------------------------------------------------------------------------------|
E|-3-1-3-4-3--------------------------------------------------------------------|x4


['We have lost the sense of community...']

1:58 - 2:05

G|-----------------------------------------------------------------------------|
D|-0--0h10h12--0-0h10h12-0--0h10h12-0-0h10h12-0-0h10h12------------------------|
A|-----------------------------------------------------------------------------|
E|-----------------------------------------------------------------------------|x2

['No, you don't have to try...']

2:05 - 2:38

G|------------------------------------------------------------------------------|
D|------3h5--------3h5--------3h5------3h5-----3h5------------------------------|
A|------------------------------------------------------------------------------|
E|-3--3--------3-3-------3--3-------3-3----3-3----------------------------------|x8

['It is now...']

2:38 - 2:53

G|----------------------------------------------------------------------------------------|
D|----------------------------------------------------------------------------------------|
A|----------------------------------------------------------------------------------------|
E|--3\---3-3-3\---3-3-3-3-3\--3-3-3\--3-3-3-3-3\--3-3-3\--3-3-3-3-3\--3-3-3\--3-3-3-3-3\--|

[Melodic breakdown]

3:01 - 3:32

G|--------------------|--------------------------|
D|---5---5-7-----5----|--------------------------|
A|------------8----5--|--8---8-7-----------------|
E|--------------------|-----------8--------------|x2

G|--------------------|--------------------------|
D|---5---5-7--8--7----|--------------------------|
A|-----------------8--|--5---5-8--3--------------|
E|--------------------|--------------------------|

G|--------------------|--------------------------|
D|---5---5-7-----5----|--------------------------|
A|------------8----5--|--8---8-7-----------------|
E|--------------------|-----------8--------------|


3:40 - 4:11

G|--------------------|--------------------------|
D|---5---5-7-----5----|--------------------------|
A|------------8----5--|--8---8-7-----------------|
E|--------------------|-----------8--------------|x2


G|--------------------|--------------------------|
D|---5---5-7--8--7----|--------------------------|
A|-----------------8--|--5---5-8--3--------------|
E|--------------------|--------------------------|

G|--------------------|--------------------------|
D|---5---5-7-----5----|--------------------------|
A|------------8----5--|--8---8-7-----------------|
E|--------------------|-----------8--------------|



[Back to the main 4-string riff/piccolo riff]

4:11 - 4:42

G|------------------------------------------------------------------------------|
D|------3h5--------3h5--------3h5------3h5-----3h5------------------------------|
A|------------------------------------------------------------------------------|
E|-3--3--------3-3-------3--3-------3-3----3-3----------------------------------|x8


[Outro]

4:42 - 4:47

G|----------------------------|
D|----------------------------|
A|----------------------------|
E|--3\---3-3-3\---3-3-3-3-3\--|

***********************************
| /   Slide up
| \   Slide down
| h   Hammer-on
| p   Pull-off
| ~   Vibrato
| +   Harmonic
| x   Dead note
| b   Bend
| pb  Pre-bend
| br  Bend release
| pbr Pre-bend release
| brb Bend release bend
***********************************