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World Cup: The art of protest -- Brazil's graffiti artists tackle Brazil 2014

If graffiti is the voice of the street, what better way to take a nation's pulse than by gazing upon the walls of its inner cities?<!-- -->
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</br>In Brazil, like many nations, graffiti has long been a way for urban artists to decorate their neighborhoods, voice an opinion or tag prominent buildings with their signature style.<!-- -->
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</br>As the 2014 World Cup approached, however, many works began to take on the role of a complex social commentary.<!-- -->
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</br>Like the diverse spectrum of emotions and opinions surrounding the hosting of the event itself, graffiti appeared that was both aggressive and welcoming; political yet playful.<!-- -->
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</br>Brazilians love their football after all -- as evidenced by the passion displayed inside stadia throughout the World Cup so far -- but many remain appalled by the amount of money being spent to host the tournament. <!-- -->
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</br>We asked <a href='https://www.flickr.com/photos/cranioartes' target='_blank'>Cranio</a> and <a href='https://www.flickr.com/photos/pauloito/' target='_blank'>Paulo Ito</a>, two prolific graffiti artists from Sao Paulo, to explain how the sentiment of the Brazilian street has impacted their work and been transported onto walls and buildings across the vast country. <!-- -->
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</br>Interviews and captions by <strong><a href='https://twitter.com/EoghanMacguire' target='_blank'>Eoghan Macguire</a></strong>, for CNN

If graffiti is the voice of the street, what better way to take a nation's pulse than by gazing upon the walls of its inner cities?

In Brazil, like many nations, graffiti has long been a way for urban artists to decorate their neighborhoods, voice an opinion or tag prominent buildings with their signature style.

As the 2014 World Cup approached, however, many works began to take on the role of a complex social commentary.

Like the diverse spectrum of emotions and opinions surrounding the hosting of the event itself, graffiti appeared that was both aggressive and welcoming; political yet playful.

Brazilians love their football after all -- as evidenced by the passion displayed inside stadia throughout the World Cup so far -- but many remain appalled by the amount of money being spent to host the tournament.

We asked Cranio and Paulo Ito, two prolific graffiti artists from Sao Paulo, to explain how the sentiment of the Brazilian street has impacted their work and been transported onto walls and buildings across the vast country.

Interviews and captions by Eoghan Macguire, for CNN