Indigenous Senator Jacinta Nampijinpa Price has been filmed calling an Aboriginal activist a "nobody" in the lobby of an Adelaide hotel.

Just a day after revealing she will be defecting to the Liberals, much to the fury of some of her former Nationals colleagues, footage shows Noongar advocate Marianne Mackay heckling the Warlpiri /Celtic senator.

In the video, Ms Mackay, who was a candidate for the Socialist Alliance in the 2021 WA election, can be heard calling out, "You might be a senator, but you are not respected by your own people," at Senator Price as she walked through the Intercontinental Hotel.

"Your own Elders have more respect for me than you."

In response, Senator Price turned to Ms Mackay and says, "You're a nobody".

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National Indigenous Times has reached out to Senator Price for comment.

It is not the first time Senator Price has been subject to vocal criticism from Indigenous groups. During the election campaign, she was subject to a protest from activists and Elders when she visited Noongar Country.

Noongar community leader Robert Eggington used Facebook to call on other critics of Senator Price to protest her arrival in the city of Bunbury, posting on a Noongar Facebook group: "Need your support Noongar mob. She is not welcome here, and we need to make that very clear."

A letter sent by Renae Isaacs-Guthridge, a Wardandi custodian who is also connected to Country across the Noongar and Yamatji Nations, to now Liberal MP Ben Small, said the Senator's "well-documented positions on matters of truth-telling, voice and Aboriginal and Torres Strait Islander justice are considered by many Aboriginal and Torres Strait Islander peoples to be harmful and dismissive of lived experiences".

Ms Isaacs-Guthridge claimed that by bringing such "dismissive" views to Wardandi Country "without appropriate consultation," Senator Price appeared to "disregard local cultural protocols and community sentiment".

"Wardandi elders and custodians deserve the basic respect of being consulted on matters that directly affect our communities and cultural safety," she said.

In response, Senator Price, who was popular in WA during the referendum amongst No voters, said she "won't stand for intimidation, or bullying, or the weaponisation of cultural reinvention".

"We live in a democratic country where everybody is entitled to an opinion," she said.

"What I'll say to activists such as Renae is 'my door is always open'...what I would say to the activist class is 'debate the issues, don't attack the individual. You can have a difference of opinion. That is your right to do so, but no one has a right to restrict freedom of movement for anybody in this country."