A gathering is planned in Katoomba on Saturday, June 6 in a show of support for the US protests over the death of George Floyd, and in solidarity against the over-representation of Indigenous people within the Australian legal system.
Darug man Uncle Chris Tobin will address the gathering, to be held from midday to 12.30pm on Katoomba Street, outside the old library.
People then have the option to catch the train to Sydney for a rally at 3pm outside the Department of Immigration.
One of the organisers of the Katoomba event, Rachel Evans, encouraged people to bring signs in support of George Floyd and pushing for an end to racism.
"This campaign is not going to die down or go away. It's very important that people come along, whatever time or capacity they have," she said.
The Katoomba and Sydney resident has been campaigning for Aboriginal rights and about Aboriginal deaths in custody for more than 10 years.
Ms Evans is non-Indigenous but said as a member of the Queer community, which has also been oppressed, it was important to stand together in solidarity.
"We are seeing the whipping up of bigotry and prejudice and it's so important for us to stand together," she said.
Mr Floyd, an African-American man who was in handcuffs at the time, died in Minneapolis after a white police officer ignored bystander shouts to get off him and Mr Floyd's cries that he could not breathe.
In 2015, Aboriginal man David Dungay said "I can't breathe" multiple times before he died while being restrained by five prison guards in a Sydney jail.