The federal government has condemned a "disgusting" video sent to Senator Lidia Thorpe from a neo-Nazi, threatening her and burning the Aboriginal flag.
In the video, a man in a balaclava claiming to be from a neo-Nazi Warriors for Convict Resistance reads a statement from his phone endorsing "white Australia".
He then makes racist statements about First Nations people before burning the Aboriginal flag and performing a Nazi salute.
Federal government frontbenchers condemned the video.
"It's cowardly and disgusting," frontbencher Bill Shorten told Nine's Today program on Thursday.
"I don't know what it is with these man-baby Nazis - wearing a hood so no one can see you. They think they're so tough."
Home Affairs Minister Clare O'Neil is supporting the Gunnai, Gunditjmara and Djab Wurrung senator from Victoria.
"That video is menacing, disgusting, and it is obviously deliberately targeting her to stop her from expressing her views," she told Nine.
"We will do everything we can to support Senator Thorpe."
Asked if the Australian Federal Police would be involved, Ms O'Neil said "of course".
"The AFP protection is integral to the members of parliament but the Australian government takes this incredibly seriously."
With the referendum on the Indigenous Voice to Parliament due to be held on October 14, politicians are growing more concerned about extremists spreading racism and misinformation.
"I am really worried about it," Ms O'Neil said.
"We're seeing over time in Australia different types of groups who pop up, selecting different ideologies ... being radicalised and joining these communities online, working together and getting more violent in their radical activities."
Australia's security agencies are "very, very, very good at what they do," Ms O'Neil said.
"They watch these groups very closely and it is a big focus of our government to make sure we stay on top of these problems."
This is not the first time the Blak Sovereign movement leader has been threatened by neo-Nazis.
A similar video in February 2022 used a racial slur against the independent senator and showed the Indigenous flag being burned.
Senator Thorpe is expected to speak about the video later on Thursday.