IT IS a familiar-sounding tale: after decades of simmering discontent a new form of media gives opponents of an authoritarian regime a way to express their views, register their solidarity and co-ordinate their actions. The protesters’ message spreads virally through social networks, making it impossible to suppress and highlighting the extent of public support for revolution. The combination of improved publishing technology and social networks is a catalyst for social change where previous efforts had failed.
That’s what happened in the Arab spring. It’s also what happened during the Reformation, nearly 500 years ago, when Martin Luther and his allies took the new media of their day—pamphlets, ballads and woodcuts—and circulated them through social networks to promote their message of religious reform.