Senator Lidia Thorpe says she had written a number of letters to King Charles III making her case for Treaty, land back and restorative justice before her protest made headlines around the world on Monday.

Speaking to National Indigenous Times on Monday evening, the Gunnai Gunditjmara and Djab Wurrung senator said she has a responsibility to her ancestors to take a stand.

"We all have a responsibility to our ancestors. We talk about the frontier wars and our warriors; we still have a responsibility to resist this occupation and this violent colony that we are dealing with every single day of our lives," she said.

"My heart was pumping and I wasn't sure when to do what – I wasn't sure what – I did have my Uncle Robbie's writ to deliver to their king, to appear in the ICJ for the genocide of our people. I wasn't able to give that to their king, but I had to do something – I can't stay silent when there are injustices going on against our people.

"There were Blackfellas in that room that were shame, there were Blackfellas in that were wearing their colonial medals with pride, and that makes me sad because we have to continue to resist this occupation in a way that forces them to come to our table and talk about peace.

"And what does peace look like? Peace looks like a Treaty, and that's what my Old People are telling me. I know there are people out there that may not agree with that, Blackfellas may not agree, but we don't have to agree; let's go down the process of a Treaty, let's work out what we want for our peoples, for our families, for our language groups, and put that on the table."

The independent senator for Victoria said the treaty process must be led by Indigenous people and be an inclusive journey.

"A Treaty cannot be dictated to us by any government like we are seeing around the country. They can't choose the rules for us. The rules have to be what we want them to be, and no one should be left out," she said.

"I wanted to send a clear message to King Coloniser to say that there is unfinished business, that we want our land back, we want the bones back – do you know how many of our Old People have been going overseas trying to get our artefacts back and our bones back? I talk to these old fellas and they're tired, so why not? Why not go out there and say 'you need to give this back' and 'you need to sit around the table and have a treaty with us', because I am sick of seeing our people dying at the rate that we're dying, I am sick of seeing the destruction of our water and our country.

"It is an ongoing war, that's what it is, and we want an end to that. We want peace, so that all our families don't have to deal with the ongoing genocide which is locking our people up, taking our children, destroying the land, destroying the water, and bringing harm to our people. They are acts of genocide."

The Senator noted she has legislation before the parliament, which she introduced to the senate in February, to address the authority to bring genocide cases in Australia.

"I do have a genocide bill that is before the parliament, because the Attorney General has the one and only say on bringing any genocide case in this country. At the end of November there will be a protest outside parliament against the genocide that is going on against our people every minute of every day, and my bill will be voted on in parliament. I don't expect my bill to get the support of the two major parties, because they'll be complicit in the genocide," she told National Indigenous Times.

"It's a statement and it's another form of resistance – we need to call out this ongoing genocide, these crimes against humanity, and I will continue to do that, I will use this position to bring truth-telling to the rest of the world."

Senator Thorpe was successful in bringing her message to the rest of the world, with news outlets including CNN, Al Jazeera, The National (Scotland), the BBC, Deutsche Welle, NPR, the Washington Post, La Repubblica, The New York Times, Le Monde, Corriere della Sera and others reporting on her protest against Charles III.

She said she expected the king would understand her message and the point of her action.

"If he's an educated man he will understand that. We are teaching our kids that, they understand so surely; he has been around long enough, he knows that his family has done wrong by our people and many others around the world," she said.

"I have been sending him letters… and that informs him on what I wanted to talk to him about. He's ignored all of those. It's on him, if my statement today wasn't enough of an education, what is?

"I will keep resisting, I will keep fight for our Old People, and here's to the Blak Sovereign Movement because we have the world stage right now and I ain't ceding my sovereignty."