The anonymous account from which the request was made is based in the UK and had posted or shared a stream of racist, antisemitic and far-right content including the use of offensive racial slurs.
Hennessy said she was not only concerned about the impact of such material on Hillsborough survivors and bereaved families.
“I also think this is another fine example of why we need to be protecting children from social media,” she said.
“I think the fact that you can just go on and give these AI systems these types of instructions and there are no boundaries, I just think it reinforces why children need protecting from the internet, if I’m perfectly honest.”
Peter Scarfe, chairman of the Hillsborough Survivors Support Alliance, said the posts were “triggering”.
In response to other users complaining about the posts, the Grok account said: “I follow prompts to deliver without added censorship.
“The posts have been removed from X after complaints. No initiation of harm on my end.”