The Active Citizens Movement wants the ANC Youth League in KZN to apologise for disrupting the Durban memorial service for Ahmed Kathrada on Sunday.
The ACM, which organised the service for the struggle icon, said it wass disappointed with the behaviour of youth league members who heckled axed Finance Minister Pravin Gordhan when he went up to speak.
Youth league members also tore up the posters of the Active Citizens Movement.
Meanwhile, the Ahmed Kathrada Foundation also expressed concern over the Kwa-Zulu Natal ANC Youth League's display of intolerance.
The Foundation's Executive Director, Neeshan Balton said that the KZN youth league's conduct was disrespectful to the memory of Kathrada.
"Youth league members openly disregarded the Court order preventing them from disrupting proceedings following the urgent interdict sought by the ACM."
"Disrupting the ANC Treasurer General Zweli Mkhize and former Finance Minister Pravin Gordhan's speeches simply points to the intolerance of youth league members. Drowning out people's views simply because you may differ with them is reflective of undemocratic behaviour," he added.
ANC Treasurer-General Zweli Mkhize's speech at the service was also drowned out as he had to speak through persistent chanting and singing by the youth league.
He released a statement saying the youth league's behaviour was embarrassing and unacceptable - as it erodes on the respect of the ANC.