The area has not only been a matter to cleaning graffiti by the authorities, but has been heavily used by the army which has placed numerous missile launchers on rooftops of buildings of citizens (the neighbors have complained but the judges have given the reason the military).
On the occasion of this controversy, and defying to the obsolete ideas of authorities (as always), one of the first images, that Banksy proposes, is missile launches, with the graffiti: "Hackney* Welcomes the Olympics" graffiti, showing an Olympian launching a rocket, instead of a javelin.
Hat tip to Banksy!!
* Hackney is a neighborhood (twon) northeast of London.