A Berlin court sentenced Yildiz Aktas, accused of supporting the Kurdistan Worker's Party's (PKK) activities, to two years of probation on Thursday.
Footage shows the judges and the defendant Aktas in the courtroom.
A group of protesters attended the sentencing in solidarity with Aktas, and were seen outside of the courtroom posing for pictures with the accused and holding a banner reading: "Freedom for Yildiz, Defend feminism."
Yildiz was reportedly accused of supporting the PKK by organising rallies and other events, as well as acting as an intermediary for the organisation in Europe.
The PKK is listed as a terrorist organisation by the European Union, Turkey and the United States.