"In three days," said Mrs. Rajavi, "we will be marking the anniversary of the adoption of the Universal Declaration of Human Rights."
"For my country, Iran, Human Rights Day is a reminder of the deep scar on my nation's body and soul, with 120,000 executed dissidents and hundreds of thousands of tortured political prisoners, with at least 5000 prisoners who are presently on the death row and human rights activists and followers of different faiths in prison."
"The most horrific page in the record of this regime is the massacre of 30,000 political prisoners in only a few months in 1988. This genocide was carried out upon a written edict by Khomeini."
"The main perpetrators of this massacre are now among the regime's leaders and senior officials", she said.
"In recent months, a growing movement has begun in Iran, demanding accountability and bringing those responsible for the massacre to justice."
The NCRI has recently published a list of members of Iran' government who were directly involved in the massacre, including Minister of Justice Mostafa Pourmohammadi.
Richard Ashworth, a MEP from the United Kingdom, urged human rights advocates to push for change in Iran.
"According to Amnesty International, 60% of all registered executions in the world took place last year, and it holds the hideous record of top executor of minors", said Ashworth.
"We should press the United Nations to establish a body of inquiry to bring the perpetrators of the 1988 massacre to justice".
Tunne Kelam, a MEP from Estonia, detailed the effects of Tehran's public relations campaign in Western countries and their goal of hiding human rights abuses on their own soil.
"There have been some false hopes, driven by Iranian lobbies in the West, that Iran will reform...but Iran under Rouhani remains the number one execution per capita in the world. More minors are executed in Iran than in any other country of the world. And the people of Iran are denied their most important right: to have a free and fair election", said Kelam.
"Rouhani's true face was not a secret to the Iranians, but after four years it has also become clear for all of us beyond any doubt that he is a real, cruel dictator."
"You must hear the calls for justice of the mothers of the victims of the 1988 massacre", said Shabnam Madadzadeh, a former political prisoner who recently escaped Iran, at the event.
"It is time to stand on the right side of history", said Madadzadeh.
"And unfortunately, the war crimes being committed in Syria and the situation of men, women and children in Aleppo is an inevitable shame in modern history. It is time to put an end to our silence."
José Bové, a MEP from France and a member of the Green party in parliament, said to the Iranians present at the event, "Your place now is in Europe, and in this parliament you are welcome."
"The government of Iran has a heavy responsibility for what is happening in Syria", said Bové.
"The Syrian government would not have sustained itself without the support of Iran. The role of Hezbollah is well-known; today, Iran is one of the greatest generators of trouble in the Middle East."
The full text of Maryam Rajavi's speech can be found on her website.