At least 100,000 people marched in Spain over the weekend to mark the one-year anniversary of the protest movement that arose in response to crippling austerity measures and economic stagnation. The so-called "Indignados" movement swept Spain a year ago and helped inspire similar protests across the globe, including the Occupy movement in the United States. On Saturday, Spanish protesters celebrated the one-year mark with rallies in 80 cities.