French Revolution ousting absolute Monarchy.
The Economist recently published an essay on the state of democracy in the world. It shows that simply holding elections does not constitute a healthy democracy. In the UK political party membership has declined from 20% to 1%. In both established democracies and in new democracies fundamental questions are being asked about how to have a healthy political democracy which can avoid the excesses of selfish majoritarianism.
I would have also liked to have seen more on the excesses of inequality as an erosion of economic democracy but this essay is worth the several pages of reading. http://www.economist.com/news/essays/21596796-democracy-was-most-successful-political-idea-20th-century-why-has-it-run-trouble-and-what-can-be-do?frsc=dg%7Ca&fsrc=scn%2Ftw_app_ipad