best friends dre urhahn and jeroen koolhaas are the driving force behind favela painting, an ongoing project launched in 2005 after they had collaborated on a documentary that explored hiphop culture in the notorious favelas of rio de janeiro. inspired by the spirit of favela dwellers, the dutch duo embarked on an audacious project in the vila cruzeiro neighbourhood to create a public artwork hat would not only embellish the favela but also mobilize the community and contribute to a positive vibe. ever since, favela painting has completed two additional projects in the city, and they've now also shifted their focus to a rundown inner city area of philadelphia with a similar project and similar objectives. currently on at amsterdam's kallenbach gallery is back to rio, an exhibition that explores the duo's past projects through photographs, mock-ups and drawings, but more importantly, also a showcase that aims to draw attention to favela painting's most ambitious endeavour to date: to paint an entire favela in rio! a kickstarter project has been launched to collect a minimum of usd 100,000 to make this project happen. this amount will cover basic preparations, such as creating production and paint schemes, the creation of local headquarters, local team recruitment and covering material costs and wages. the dream goal is to raise usd 250,000 as this amount would enable the duo to train a much larger team and paint over one hundred houses. obviously, an even bigger sum of money would result in an even bigger creative outcome as favela painting is also thinking of making a book, a movie and - hell, why not? - their very own paint factory [the exhibition is on through oct 28]. location: pazzanistraat 9-11 [staatsliedenbuurt].