The artists Haas&Hahn— Jeroen Koolhass (yes, there is a Rem connection) and Dre Urhahn—are heirs to the De Stijl movement, applying early 20th century Dutch principles to 21st century cities on a colossal scale. Playing with form and mass, unburdened by the restrictive tenets of De Stijl, they burst into Brazilian shanty towns, called favelas, with a riotous display of color and geometry.
“Haas&Hahn in Brazil”
Photo: Haas&Hahn for favelapainting.com
http://www.metropolismag.com/pov/20120710/favela-painters-paint-philadelphia