"Know Your Rights" -- The Clash:

This is a public service announcement  With guitar
Know your rights all three of them

Number 1  You have the right not to be killed  Murder is a CRIME!
Unless it was done by a  Policeman or aristocrat  Know your rights

And Number 2  You have the right to food money  Providing of course you
Don't mind a little Investigation, humiliation  And if you cross your fingers
Rehabilitation  Know your rights  These are your rights  Wang
Know these rights

Number 3  You have the right to free  Speech as long as you're not
Dumb enough to actually try it.  Know your rights  These are your rights
All three of 'em  It has been suggested  In some quarters that this is not enough!
Well........

Get off the streets  Get off the streets  Run  You don't have a home to go to
Smush  Finally then I will read you your rights
You have the right to remain silent  You are warned that anything you say
Can and will be taken down  And used as evidence against you
Listen to this  Run                                                                                     (sing365)

The song begins with the words “This is a public service announcement...with guitars!” The structure of the song revolves around the rights held by the poor and disenfranchised, in which the speaker of the song, presumably a villainous civil servant , names the three actual rights. At the end, the notion that more rights should be granted is rebuffed by the speaker.

The three are:

1. The right not to be killed. Murder is a crime, unless it is done by a policeman, or an aristocrat.
2. The right to food money, providing of course, you don't mind a little investigation, humiliation, and, if you cross your fingers, rehabilitation.
3. the right to free speech                                                                               (wikipedia).