AdvertisementCan Hashtags And Pop-Up Protests Topple A Leader?October 21, 2016Ofeibea Quist-ArctonfacebookEmailA protester holds up a street sign with President Robert Mugabe name on it as Zimbabwe opposition supporters clash with police during a protest march for electoral reforms on August 26, 2016 in Harare. Riots erupted in Zimbabwe's capital Harare after police fired tear gas and beat protesters who responded by throwing stones in the latest of a string of tense demonstrations. (AFP/Getty Images)