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Martin Farrer

Good morning and welcome to our live news blog. I’m Martin Farrer with the top overnight stories before Emily Wind takes the controls.

A Ngunnawal elder has rebuked Lidia Thorpe over her confrontation with King Charles, saying the Victorian senator doesn’t speak for her people and that her comments were “disrespectful”. But other First Nations activists are continuing protests against the visit, including trying to a issue the king with a court summons for genocide.

The subject came up on the ABC’s Q+A program, with the employment minister, Murray Watt, saying it wasn’t a “particularly effective way of getting her point across” and he was “in the room when it happened and was not aware until this very moment this is the issue she was raising today” – at which point an audience member had a heckle of their own to deliver. More on that in a few minutes.

We’ll be following the progress of the royal couple today as they continue their visit with a series of engagements in Sydney.

Our latest Guardian Essential poll examines the king’s popularity and finds that he has a stronger approval among Australians for the way he is doing his job than either the prime minister or the man who wants to be PM. Taken just ahead of the monarch’s arrival in Australia, the poll of 1,140 voters found that 50% approved of the job Charles is doing as Australia’s head of state, with 26% disapproving and 24% unsure. More coming up.

One of Australia’s biggest companies, BHP, has been accused of “cynically and doggedly trying to avoid” responsibility for Brazil’s worst environmental disaster in a lawsuit involving 620,000 claimants. The huge case concerning the 2015 Mariana disaster – the largest group lawsuit in English legal history – began at the high court in London overnight. More coming up.