Almost 30 years ago, the young Bogdan drunk coffee and went to demonstrate against the Roman Communist regime, the last time his mother saw him before he was killed.

Elena Pancilla, 75, is one of 5,000 civil prosecutors for the historic trial, the first of which opens Friday in Bucharest before the High Court of Cassation and Justice.

In the front row of the defendants, former Romanian President Ion Iliescu, who will stand trial for "crimes against humanity", is considered by the families of the victims to be the mastermind of the violence that killed hundreds of Romanians after the fall of President Nicolae Ceausescu on December 22, 1989.

As of 22 December, at the request of Ceausescu, the army and police fired on the crowd, but most of the 900 victims were killed after it fell.

Who kept killing?
Ceausescu's youth minister, Ion Iliescu, led the country at the head of the National Salvation Front.

The 89-year-old former communist politician, who was first elected president of the Democratic Republic of Romania (1990-1996 and then 2000-2004), rejects the accusations and will not attend Friday's session.

In this month-long trial, 862 people who were killed by "indiscriminate gunfire and fratricidal fighting" will be tried, resulting in 2,150 injuries between 22 and 31 December.

He is on trial along with Iliescu, a former deputy prime minister, Djilo Vuykan Fukulisu, and former air force chief Yusuf Ross on charges of "crimes against humanity."

Survivors and families of the victims have been living for the past 30 years on the back of a long investigation, which was re-launched in 2016.

Romania was the last country in the Soviet Union to overthrow the communist regime.

The uprising began in Timisoara on 16 December 1989 before moving to Bucharest on 21 December.

Nicolae Ceausescu and his wife fled the following day but were arrested and executed on December 25 of the same year after a field trial.