[1][2] His paternal grandfather, Saturnino Fernández, with whom he identified politically, was a communist, republican, and staunch anti-Franco militant.
He spent two years working as a sheet metal worker in the SEAT car factory, until an injury forced him to leave.
[1] In 2006 he published a critical inquiry into the repressive behaviour of the Spanish police Cròniques del 6 i altres retalls de la claveguera policial.
[4] Throughout his parliamentary term, Fernández became particularly well-known for his criticism of the corruption of bankers and politicians in the Parliament of Catalonia's commission of inquiry into the Spanish financial crisis that began in 2008.
In November 2013, when the former president of Bankia and former managing director of the IMF Rodrigo Rato was called to testify to this commission, Fernandez ended up brandishing his sandal in an Arab gesture of contempt, and told Rato: “See you soon, gangster!”[5] In 2014 he was appointed chairman of the Catalan Parliament's commission of inquiry into tax fraud and evasion and political corruption.