Childish? Perhaps. But with our rulers and better so isolated from the everyday realities they enforce on us, splashing them with green goo is about the only way we can get a little payback. Pieing or gooing somebody like Mandelson is about the only way in which you can puncture his comfortable bubble of respect and show the disdain and loathing that he’s held in outside the Westminister clique.
And hey. it’s not as if he doesn’t deserve worse.