Public debate, social media demonstrations, participative assessment, technocracy and transparency: these are just some of the issues on the growing list of multiple and evolving interactions between technology and democracy in Europe since the middle of the 19th Century. The sixth Tensions of Europe conference aims historicizing and exploring these complicated links in long-term perspective. It will address key contemporary issues such as the democratization of technology and the vulnerabilities of technological democracies. The conference will close the ANR funded project « Large technical networks and democracy: innovations, practices and interested parties in long-term perspective, from 1880 to the present day » (http://www.msha.fr/resendem/). The conference will also feature the official presentation of the Making Europe book series, more than 40 panels, and of course the traditional untraditional Tensions events – this time in Parisian style!