In this struggle he left his life Manuel Bastias in Concepción and the young writer Héctor Barreto, first martyrs of Chilean socialism.

Subsequently, it will be one of its most notable leaders, the young Raúl Ampuero, who will take charge of the General Secretary of the PS, standing out for his classist and revolutionary leadership.

For this period, the JS has already consolidated its insertion in universities, towns and unions, distinguishing itself everywhere for its rupture with the bourgeois structures of domination and fighting for demands that integrate youth in a society that insists on marginalizing them; The right to education for all, school fees, student immunity, labor improvements, all become slogans that the system must quickly satisfy under the pressure exerted by youth mobilization.

In the 70s, after a turbulent period of class struggle in the last decade, the popular vanguard already had a solid Youth Movement, which gave it its greatest combative character and where the JS played an important leading role.

[1][2] In 1971, the XX National Conference of the JS approved a program and an organic structure that would consolidate its unquestionable revolutionary, Marxist and Leninist profile.

In this struggle, among others, Daniel Medel, Flavio in Nicaragua fall; However, after an arduous, historic effort, the JS inaugurated at the end of 1984 a new stage of its development: The XXI National Conference that concluded with the definition of its own organization, electing a Central Committee, a Political Commission and re-electing Carlos Lorca as Secretary General, but symbolically, since as long as his whereabouts were not known, a Subrogating Secretary General was empowered to replace him.

Once the dictatorship ended through the 1988 Chilean presidential referendum, the JS became an autonomous body of the Socialist Party of Chile, in a new political scenario diametrically different from the revolutionary past of the years when the Popular Unity was in government.

In this context, participation in democracy in the different social movements that have been developing has been fundamental to advance profound changes to the Pinochet legacy, being behind demands in areas such as education, unions, sexual diversity, the environment, gender, regionalism, indigenous, constitutional, among others.