Oh gosh it was years ago! xD xD
But if I remember correctly the Spanish government randomly arrested Basque politicians and members of a national small party blamed to have links with the armed group ETA (currently the ETA give up the armed struggle)
It was one of the many abuses committed, not to mention a foolish tactic that usually enraged the Basque indipendentist that in this was saw how the political struggle had no space to operate.
I would show you this photo: Euskal Herria
It was a meeting/debate still about that issue: I was the guy circled in red, the guy in black close to me is/was an Anarchist.
They've been "cut" from the photo, but behind the bank there were 2 or 3 Kurds that that evening made ethnic Kurdish food to gather some founds for their political activity.
This YEARS before the Kurds get on the first page of newspaper for their struggle against ISIS/Daesh in Kobane