"Our evidence suggests that social media carried a cascade of messages about freedom and democracy across North Africa and the Middle East, and helped raise expectations for the success of political uprising," said Philip Howard, the project lead and an associate professor in communication at the University of Washington. "People who shared interest in democracy built extensive social networks and organized political action. Social media became a critical part of the toolkit for greater freedom." [1]

"Social media played a central role in shaping political debates in the Arab Spring. A spike in online revolutionary conversations often preceded major events on the ground. Social media helped spread democratic ideas across international borders." [2]

"Global Use of Social Media to Fight Corruption Inspires Youth in Brazil" [3]

"In the Bagega community in Nigeria, lead poisoning had resulted in thousands of children suffering serious health problems. The government announced it would release around $5.3 million for remediation but months later the funds had still not reached the affected community." Two passionate guys formed an organization called Follow the Money and amplified the voices of this forgotten community. Within 48 hours of a Twitter campaign targeting government officials and other influential leaders -- and following a campaign by groups including Human Rights Watch -- the funds were released and affected children are now receiving the urgent medical care that they deserve. [4]

[1] https://phys.org/news/2011-09-quantifies-social-media-arab.h...

[2] http://collectiondevelopment.library.cornell.edu/mideast/Rol...

[3] http://www.worldbank.org/en/news/feature/2012/11/09/Brazil-y...

[4] http://www.cnn.com/2013/12/18/opinion/want-to-expose-corrupt...

Thank you.