Artists Jeroen Koolhaas and Dre Urhahn create community art by painting entire neighborhoods, and involving those who live there -- from the favelas of Rio to the streets of North Philadelphia. What's made their projects succeed? In this funny and inspiring talk, the artists explain their art-first approach -- and the importance of a neighborhood barbecue.

Haas&Hahn: How painting can transform communities

How painting can transform communities

Transforming Rio's favelas into vibrant works of art, artists ignite community spirit and redefine neighborhoods globally.

From Philly's streets to Rio's hills, community-driven murals demonstrate art's power to inspire change and foster local pride.

A crowdfunding campaign for Vila Cruzeiro's mural shows the global support for art that empowers communities from the ground up.