The brand as activists weapon

I do not in any way endorse the defacing of brands and logotypes, which have been conceived in a genuinely strategic and creative process between client and designer, but what is undoubtedly interesting is the power of the brand as an icon of an industry or business and its potential for détournement for other ends.
This example of the bp brand is from the Greenpeace operation in reaction to the Gulf of Mexico oil spill. The brand becomes the message, design becomes an activist tool for demonstration and counter communication - it is more powerful than words or images.