...At these rallies, nurses in scrubs, people in high-vis vests and parents with small children march alongside people in Donald Trump caps and QAnon t-shirts...
...In this photo, the Australian national flag and the red ensign flag, flown at sea by Australian merchant ships, lead the way across the bridge at Perth's Elizabeth Key.
But they're being flown upside down, which is a sign of extreme distress, according to University of South Australia law lecturer Joe McIntyre.
"It's a way of communicating: 'I am in intense distress,'" he said.
"There's this sense that, 'I know the truth. I am fighting a righteous battle to protect my country. Why can't anybody see how unlawful our governments are?'"
Under Australian national flag protocols, the flag should never be flown upside down.
But upside-down flags have been used around the world as a protest symbol, including at the Capitol Hill riot in Washington in January this year...
...But Dr McIntyre said the use of the red ensign by sovereign citizen groups could also be because it was associated with a time in history when the White Australia policy existed in Australia.
The Canadian alternative-right has also appropriated their country's red ensign.
"The sovereign citizens' movement in the US is historically white supremacist," he said...
...But some protesters have co-opted and adopted symbols and slogans from overseas, including supporters of former US president Donald Trump.
For example, on the right of the photo below, two people are wearing matching red "Make Australia Great Again" caps.
It's a local remake of Mr Trump's campaign slogan, which has been widely adopted by the anti-lockdown and anti-vaccine protest movements, including Clive Palmer's United Australia Party.
In the photo, a man is wearing a T-shirt of the QAnon conspiracy theory, based around a belief that the world is run by a global cabal of Satan-worshipping paedophiles who control American politics and the media.
His T-shirt's slogan of "where we go one, we go all" is QAnon's rallying call.
Part of the pro-Trump conspiracy theory was that Mr Trump would expose the cabal, including Democrat politicians like US President Joe Biden and Hillary Clinton.
Dr Chilton said the anti-vaccination movement was alive with these kinds of theories...
...This sign uses symbols from Nazi Germany, including the deeply offensive use of the yellow star, which Jews were forced to wear.
In recent years, it has been used in the US by anti-vaccination protesters to symbolise oppression.
Dr Rich said the use of this symbol could indicate the involvement of white supremacist groups or just that people had created an alternate reality in their mind where this was appropriate...