Throughout his career, he has distinguished himself for his opposition to all types of totalitarianism, both as an opponent of Franco's dictatorship and of ETA terrorism, which carried out an attack on him in 2001.

[1] His father, Francisco Javier de Landaburu Fernández, was a PNV deputy during the Second Republic and vice-chairman of the Basque Government under Franco during his exile in Paris, where Gorka was born.

He is also vice-president of the editorial board of Cambio 16, following the incorporation of Jorge Neri as president, and director of the Espacio de Información General news agency.

A member of the PSOE since 1993, his opposition to violent nationalism and terrorism in the Basque Country has marked his career and been the focus of much of his work.

He has worked with the coordinator of Gesto por la Paz and is president of the Basque Group of Victims of Terrorism.