Your voice is your social network!

People are using social media to hunt war criminals, win the White House, defeat an American House Speaker, change banking regulations, and overthrow dictators in Libya, Tunisia, Egypt, and Yemen. In each instance it was social media that facilitated broad-based social activism and empowered the aspirations of millions. Its power has just begun to be tested, but the evidence so far indicates that social media has successfully reinvented social activism. YouTube, Facebook, and Twitter; as means for millions of Americans to vent their frustration with the policies of my then-employer, President George W. Bush, and it played a central role in returning the Democrats to power. From Cairo to Tripoli to Wall Street's Zuccotti Park, social media has reduced the cost and complexity of organizing mass numbers of individuals into a single, cohesive, political force. In the process it has redefined social activism. 

link: http://www.huffingtonpost.com/mark-pfeifle/social-media-political-activism_b_1594287.html