Hundreds of locals gathered at the Australian Botanic Garden, Mount Annan last Friday to commemorate National Sorry Day.
Sorry Day is held annually across Australia on May 26, however Campbelltown Council's ceremony took place on May 28.
The botanic garden's manager of First Nations education and engagement Renee Cawthorne said the commemoration attracted more than 250 people.
"It was a good turn out," she said. "We had local Dharawal and Gundungurra people there as well."
Macarthur's Uncle Ivan Wellington led a smoking ceremony and Aunty Fran Bodkin gave a Welcome to Country at the event.
National Sorry Day is a day of remembrance and commemoration of Indigenous Australians who were impacted by government policies which resulted in the removal of children from their family homes, known as the Stolen Generations.
Ms Cawthorne said the event recognised the trauma indigenous peoples had suffered due to the actions of the government.
"It's also about the inter-generational trauma that still exists," she said.
"Most people think of the Stolen Generation as being 50 years or so ago but children are being removed from First Nations families far more frequently than other children."