With billboards choking cityscapes across the world, a global grass-roots movement has sprouted that increasingly aligns ordinary citizens with visionary politicians, business leaders and street artists in a fight against visual pollution. “This Space Available” is a documentary that explores the reclaiming of public space, and takes an incisive look at the differences between the baby-boomer generation that spawned the excess in advertising and today’s young adults—the most marketed-to generation in history