“The people that run our cities do not understand graffiti because they think that nothing has the right to exist unless it makes a profit. The people who truly deface our neighbourhoods are the companies that scrawl giant slogans across our buildings and buses trying to make us feel inadequate unless we buy their stuff. Any advertisement in a public space that gives you no choice whether you see it or not is yours, it belongs to you, its yours to take, rearrange and re-use. Asking for permission is like asking if you can keep a rock someone just threw at your head.” Banksy.