The loudest chant throughout the demonstration was "Free the People from Altsasu". As well as dozens of thousands of citizens, there were also representatives from the Navarrese parliament and government, as well as people from many trades unions and political parties. These tweets reflect particular moments during the demonstration.

The parents of the young people especially thanked people who had come from all over the Spanish State in support. The tweets below show a group which had come from Madrid with its banners; there were also people from Catalonia.

Eta badakigu Madrildik ere etorri direla hainbat autobus; bereziki eskrtzen de elkartasuna; biba zuek! pic.twitter.com/tJWbH4nDAx — Xabier Letona (@xletona) 2018(e)ko apirilak 14

At the end some improvisational poets performed in Castle Square, which was completely full of people.

After that members of the Altsasukoak Aske ('Free the People from Altsasu') platform reminded the crowd that Adur Ramirez de Alda, Jokin Unamuno and Oihan Arnanz had already been in prison for 517 days, which, they said, was absolutely out of proportion. They thanked everybody who had come to Iruñea in solidarity.

50.000 pertsonaren besarkada eramango diete bihar Madrilera Altsasuko gazteei. Itzela izan da! #Altsasu pic.twitter.com/7fIpb9qbY8 — Xabier Letona (@xletona) 2018(e)ko apirilak 14

Bel Pozueta and Antxon Ramirez de Alda, from amongst the parents of the prisoners, were the last people to get onto the stage. They were emotional and said that they would now go to Madrid in a different frame of mind. At present their children are "caught in a trap", but they said that many other people could find themselves in exactly the same situation. "There are thousands of brawls between citizens and the security forces throughout Spain every year, but a punishment such as this had never been called for", they explained.

The prosecutor is calling for a total of 375 years of prison for the young people. Their parents say that it is not a matter of being on one side or the other; the issue here is rights, and standing up for them.

In this thread of Twitter you will find more context:

Basque bar fight trial tests 10 years of fragile peace in the region. Article by @Pascale_Davies at The @guardian on the youth arrested from #Altsasu. Three of them carry 516 days at administrative detention. https://t.co/iukSHv8AE5 THREAD with more info on the case pic.twitter.com/NVmA4VH27F — Lander Arbelaitz (@larbelaitz) 2018(e)ko apirilak 15

This article was translated by 11itzulpen; you can see the original in Basque here.