Possible Clues:

• Common people, riff-raff - ...... and bobtail
• That's the first bit of the rabble
• Is there a scrap of a label for the mob?
• The label of fun for the masses?
• Bob gets a tail after this
• A scrap of a label for the common people
• Motley crew
• It's common for Bob to get a tail at the end of this
• Common riff-raff - . . . . . . and bobtail
• Diverse