In this work, we are going to show how the number of fractures and sociodemographic inequalities in Tunisia has influenced the on-line political engagement in the country. Here, we will base on the studies done in Tunisia, a small country with relatively homogeneous population which has undergone modernization but still is very unstable in its politics since 2011. However, we are going to develop a deeper understanding of the role of social network in the political arena of Tunisia.