Graffiti’s modern role is evolving rapidly. From Europe to Brazil, street artists are displaying their anger about inequality, invisibility, corruption and control. Artists including Blek Le Rat (the “father of stencil graffiti”), Roc Blackblock, Suriani and Vegan Bunnies defend their actions, and discuss whether such “freedom of expression” on walls should have any limits.

This post was originally published on The Documentary Podcast.