Here we have a well-meaning article about a supposed protest song. You can watch the video if you like and drink in the angry words. Ooh, he's so angry.
The problem with Plan B is his voice. His is not the voice of the shat-on. His upbringing is comfortable, from Simon Reynolds' liminal class, a lower-middle class/upper-working class classification which has been created to give writers something to write about. It doesn't exist. And it certainly isn't where the so-called "chavs" are. The upper working class look down on the "chavs". The lower middle class try to teach them to give them a chance to make something of themselves, become respected members of society like the upper working class bigots who look down on them.
Plan B isn't going to change anything. He's just going to make loads more money from those poor saps who loved The Prodigy when Keith found his Spitting Image punk voice.