I went to the concert in solidarity with Ariana (Irianna)
Είχα πάει στη συναυλία για την Αριάνα (Ηριάννα).
 This person is referring to Irianna V.L., a young woman and PhD candidate who was arrested, put to trial and unfairly incarcerated with unproven charges that she’s a member of a radical anarchist group. There were massive acts of solidarity all over the country and a big concert in Athens to raise awareness and money for her trial expenses. Irianna is still in prison, waiting for the next trial.