david described  what a revolution is a change of common sense   and the collective imagination and david argued  that the main achievement of the paris commune   despite a defeat had been the transformation  of the common sense about how we live together   00:03:02 so most of what we consider ordinary in our  cities public transportation street lights   public schools the eight hours work days and even  the not yet achieved equal pay for women and men   originated in the paris commune and it  was then considered to be a social madness