A trial against the Turkish pop singer Gülsen began on Friday morning in Istanbul because of a much-criticized remark about religious educational institutions.
An exit ban imposed on them was not lifted.
In the indictment, Gülsen is accused, among other things, of hate speech.
The artist faces up to three years in prison.
The allegations are related to statements made at a concert in April.
There the singer had said that the "perversity" of a bandmate was due to his time at an Imam Hatip school - Gülsen said she was only joking.
Imam Hatip Schools are state educational institutions that focus on religious education.
Turkish President Recep Tayyip Erdogan, for example, was a student at such a school.
Her lawyer Emek Emre described the judge's decision not to lift the ban on leaving the country as "illegitimate" and announced that he would take action against her.
Several people, mostly graduates of the Imam Hatip School, were summoned to the Istanbul court as plaintiffs.
They expressed their outrage and regret at the artist's statement.
Many emphasized that they felt hurt and accused Gülsen of dividing society.
The trial will continue on December 21st.