Dina Mehta : Social media like Twitter became key point of contact and news . She says the Mumbai terror attacks led to sadness and rage . Mehta is a professor at Columbia University, New York City Comment She says concrete actions resulted from widespread use of social networks .
Dina Mehta : Social media like Twitter became key point of contact and news . She says the Mumbai terror attacks led to sadness and rage . Mehta : The emotions were shared worldwide through social media . She says concrete actions resulted from widespread use of social networks .