Photo via Patricia Preiss When police arrived to a tunnel in downtown Porto Alegre, Brazil, having received word that some youths were tagging its walls with graffiti , it must have seemed like a pretty clear case of vandalism. But after a few of the culprits were handcuffed, ready to be taken to the station, the officers realized that the group was armed not with paint, but with simple
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Activists Send a Message by Cleaning Things Up a Bit
