Hundreds of young people gathered on the Esplanade des Invalides, Paris on Saturday evening.
The call for the gathering was discreetly launched on social networks under the code name "ProjetX", in reference to the cult 2012 film Project X.
Clashes began shortly before midnight on the lawns of the Esplanade des Invalides when young people threw stones at several police vehicles arriving at the scene.
Footage shows protesters clashing with police.
In turn, police used tear gas to disperse the demonstrators.