The document discusses the significant impact of social media on politics and social movements. It provides examples of how social media helped Barack Obama get elected in 2008 through innovative online strategies. It also describes how social media played a key role in revolutions in Tunisia and Egypt during the Arab Spring uprisings in 2011 by helping spread awareness and organize protests. Further, it outlines how social media was used by the Occupy Wall Street and India Against Corruption movements to connect people and amplify their causes.