Who really owns the public space? This photo of the McDonalds in Cape Town is an eye-catching and interesting statement on the deluge of visual noise that we tolerate on a daily basis – so much so that we consume it without any forethought.

Is advertising just a form of mental pollution? After all, it is an influx of messages which are designed to turn people into nothing more than consumers with a never-ending yearning for more, if not better.

This thinking is what prompted Kalle Lasn and Bill Schmalz to develop adbusters – a magazine which rails against the commercial forces which inundate our environments. According to their website, "we want a world in which the economy and ecology resonate in balance" – if you're living in a city, you've probably already seen that most messages weigh toward the economic slant.

But does graffiti activism of this sort force you to rethink the overwhelming propaganda which colours our perception of reality? Or does it draw more attention toward our consumerist, capitalist culture and inadvertently make brands seem more powerful?

What do you think?