Indigenous commissioner condemns comedian's 'deeply offensive' video

South Australia's Commissioner for Aboriginal Children and Young People has spoken out against a "deeply offensive" social media video posted by an Adelaide comedian in the wake of the death of Kumanjayi Little Baby in Alice Springs last week.

The post on social media, by Alex "Shooter" Williamson, showed him imagining a phone call made by the girl's parents to alleged murderer Jefferson Lewis.

It has since been deleted.

SA Commissioner for Aboriginal Children and Young People Dale Agius said the child's death "has broken the hearts of Aboriginal and Torres Strait Islander peoples across this country and all Australians of good conscience".

"What Mr Williamson posted was not comedy. It was not humour. It was not in the service of any worthy cause. It was cruelty dressed up as a joke, wielded against a community already grieving," he said in a statement on Tuesday.

"To exploit the kidnapping and murder of a five-year-old Aboriginal child for cheap laughs, and to role-play a conversation with the man charged with her murder, is not a punchline.

"It is racism dressed up as comedy. It tells Aboriginal children and their families that their lives, their deaths, and their grief are sport for others' entertainment.

"I stand absolutely firm: there is no context, no comedic framing, no claim of 'just having a laugh' that makes this in any way acceptable."

Mr Agius commended the Willunga Football Club, which has deregistered Williamson as a player.

The club's executive posted a statement prominently on its website saying the comments were "completely unacceptable and do not reflect the values of our club".

"We acknowledge the hurt and distress this has caused, particularly to Aboriginal and Torres Strait Islander peoples and the broader community," it said.

"We are committed to maintaining a respectful and inclusive environment and will continue to take meaningful steps to ensure our standards are upheld.

Mr Agius also called for calm and respect for the grieving family and wider community.

"I urge all South Australians, all Australians, to follow the family's lead. Now is the time to grieve with them, to hold space for their pain, and to allow justice to take its proper course," Mr Agius said.

"The death of Kumanjayi Little Baby did not occur in isolation. Her family lived with the realities faced by too many families in remote and regional Australia: overcrowded housing, limited services, and the daily pressures of deep poverty and disadvantage."

The ABC has reached out to Alex Williamson for comment.

Jefferson Lewis, 47, has been charged with the girl's murder.