[2][3] Inspired by the Italian movement CasaPound, with which they maintained ties, Social Bastion used similar political actions such as squatting, demonstrations, and humanitarian aid restricted to white homeless people.

[6] Social Bastion was founded in 2017 by Steven Bissuel, a former president of the GUD in Lyon, and later spread to other French cities such as Chambéry, Strasbourg, Aix-en-Provence, Clermont-Ferrand and Marseille.

[8][9] Social Bastion was banned by the French government on 24 April 2019, along with six other far-right groups, due to the involvement of several of its members in acts of violence.

[12] On 12 December 2017, a leader of the Strasburg branch of Bastion Social was convicted to 8 months in prison for the assault of a young man of Algerian origin.

[13] On 27 June 2018, two founding members of the Marseille branch were convicted to 6 months in prison for the aggression of an off-duty gendarme and a Black Guadeloupean man.