Maria Karystianou, whose 19-year-old daughter died in the deadly February 2023 Tempi train crash, greets during an event to announce her political party, Hope for Democracy, in Thessaloniki, Thursday. [Reuters]

Maria Karystianou, a doctor whose daughter died in Greece’s worst train crash in 2023, launched a political party on Thursday as she seeks to harness widespread frustration against Prime Minister Kyriakos Mitsotakis’ government.

Karystianou emerged as a leading justice campaigner for victims of the Tempi train crash that killed 57 people, including her 20-year-old daughter Marthi, and stoked deep mistrust of Greece’s political class.

Last year, Karystianou helped bring hundreds of thousands of people on to the streets across Greece in the biggest ⁠rallies in years demanding justice over the crash.

A trial is ⁠under way involving 36 defendants, including a station master, rail managers and former railway operator executives, on charges ranging from traffic disruption that led to the deaths to negligent manslaughter and causing bodily harm.