Lyric discussion by Imani110 

I think in tying the lyrics together to mean one thing creates a violent allegory where the victim finally exacts revenge on his tormentors while mocking their beliefs and their traits. One interpretation I get from it is the outsider who watches the upper-class born-again jocks with disgust and mocks them until the outsider decides to make them pay for their hypocrisy. The person fears for his safety daily, but still refuses to assimilate and therefore will remain an outsider (I am paranoid, but not an android)...

So this person comes in with a gun and comes after this tormentor and everyone does what he says because he's got a gun (When I am king, you will be first against the wall). The jock-type tells him, "I do really like you." but his opinion is no longer of any consequence. So then the jock-type begs for his life, a kicking, squealing gucci little piggie. Perhaps this jock-type has called the singer names and never called him by his rightful name, and this angers the singer (You don't remember, you don't remember, why don't you remember my name Off with his head man, off with his head man Why don't you remember my name?), but now that the tormentor has a gun pointed at him he is using his name (I guess he does).
The rain down part would be where you would see in slow motion the victim pulling the trigger or making that final decision to go beyond the point of no return and the second time you hear this is when the victim is actually shooting the person and maybe these are the things that are playing in his head or it could be all of those memories of being tormented flooding back into his mind while he is making that brutal decision: (That's it sir, you're leaving) the decision to through with it and take this person's life
(the crackle of pig skin) pigskin a reference to football, maybe deflating a football (player)? (the dust and the screaming) the bullet passing through the person and hitting the wall behind making some plaster fall and the screaming people when they see the murder (The yuppies networking) the rest of the people fleeing (the panic, the vomit) People panicking, maybe getting sick from seeing the gore or the jock-type's body losing its muscle control or the panic of the shot person causing him to become physically ill (God loves his children) mocking this person's religion by saying "How will your beliefs save you now?" or mocking his belief that he is a religious person and therefore one of God's children and now look at him -OR- This shooter believes he is doing God's work by eliminating this person -OR- In God's creation he also created ugly things like panic and vomit and so it mocks just how much God loves His children to give them such awful things.

Of course, I could be wrong.

Pig-skin definitely isn't a reference to a handegg, as Radiohead are all British, and we really don't use the term to refer to a football either. Some of your interpretation looks pretty supported though. It's important to bear in mind when analysing any British text that where Americans have things like jocks, British people have class-castes, so think of this as a class difference and someone being excluded as a result (fits with him used the line 'that's it sir').

@Imani110

I also feel like this is someone who is in a lower societal situation, "stop the noise im trying to get some rest" I believe refers to someone getting picked on put down bullied

when the lyric goes screaming gucci little piggy (it's referencing the gucci clothing line meaning rich people so maybe rich people were picking on him for being poor or different.

The song tempo changes drastically in a few parts

An error occured.