Prime Minister Sheikh Hasina on Saturday urged all to remain alert so that history manipulators can never return to power.
Sheikh Hasina said the anti-liberation forces not only killed the Father of the Nation. They also demolished the ideals and spirit of liberation war and martyrs.
The Prime Minister made the remarks at a rally organised at Suhrawardy Udyan in Dhaka to celebrate the recognition of historic March 7 speech of Bangabandhu Sheikh Mujibur Rahman as a world documentary heritage by UNESCO.
"They had put Razakars, Al Badrs and killers in state power...they had distorted the country's history coming to power," she said.
The Prime Minister said the country is moving ahead and it will move forward.
She vowed to build the country with Liberation War spirit.
Sheikh Hasina alleged that historic March 7 speech was banned in the country after the assassination of the Father of the Nation.
"This speech never had gone on air through radio and television. Our leaders and activists had to face inhumane torture for playing this speech, many leaders and workers laid down their lives," she said.
Hasina said no one can erase history. "The real history is always remains on top. This has been proved today."
The Awami League chief also wanted to know the present condition of those who had banned this historic 7th March speech.
"Where will they hide their faces. They had tried to peter out this speech," she said.
Hasina regretted generations one after another could not know the real history of the county after 1975.
"With this recognition, this speech has attained its place in the international arena," she said.
Citing the dreams of Bangabandhu, Sheikh Hasina described the various achievements of the government in her speech.
According to UNB, the PM said Bangladesh is now in a respectable position in the world arena.
The programme was started with the the national anthem. Bangabandhu's historic March 7 speech was also screened on the occasion.
The PM's address was followed by a cultural function and a laser show.
On October 30, the United Nations Educational, Scientific and Cultural Organisation (UNESCO) recognised the Bangabandhu's historic March 7 speech as part of world's documentary heritage.
UNESCO Director General Irina Bokova announced the decision at its Paris headquarters.
In the capital, the celebration began at noon through placing wreaths at the portrait of Father of the Nation Bangabandhu Sheikh Mujibur Rahman at Dhanmondi Road-32.
Later, a procession from there moved towards Suhrawardy Udyan where Bangabandhu had delivered the landmark speech in a mammoth gathering on March 7, 1971.
As part of the celebrationa, jubilant processions, essay and quiz competitions and screening of films on the Liberation War were arranged in 64 districts.
Bangladesh missions abroad also hold the similar programmes.
Educational institutions across the country also organised essay, quiz and general knowledge competitions.