Malema shook the stadium with his fiery speech that became a trending topic on social media.
Malema said despite his grief at her loss‚ he was comforted in the way she died‚ adding that she did not sell out her people to the apartheid regime.
"We know that there are some journalists who are taking bribes to write lies about Mama Winnie", said Duarte.
He said she wanted the ANC to honour the commitment that is set in the Freedom Charter " that the people should share in the country's wealth and that yes, the land should be shared amongst those who work it and yes that it should be returned and expropriated for the benefit of our people as a whole".
There will be plenty of time within the next few days to think about the political impact of the state funeral of Winnie Madikizela-Mandela ... and about those who saw it as an opportunity to score points over their opponents, or to burnish their own images.
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An investigation is now underway and police are trying to find the newborn's parents, who are believed to have fled. A case of unnatural death was filed on the doctor's complaint, but the parents have not been identified yet.
"Sellouts? We can see you! They just multiply into millions of red flowers of love", Malema said amid loud cheers.
Ramaphosa said Madikizela-Mandela spoke of many thoughts she had about how the revolutionary ideals and morality of her movement should be restored and not be undermined by corruption and self-enrichment.
Addressing scores of mourners at Mama Winnie's memorial service held at the Orlando Stadium in Soweto on 11 April, Duarte, the deputy secretary-general of the ANC, accused journalists of dishonesty. Aremu hailed what he called consolidation of democratic process in Africa citing "the new development in Zimbabwe and successful swearing-in of President, Cyril Ramaphosa, as the 5th President of the Republic of South Africa following the resignation of former President Jacob Zuma".
He was followed by family and other dignitaries who attended the internment after a drive from the Orlando Stadium.