Thousands turned up on streets across the US and in Europe for 'No Kings' protest rallies against the war in Iran and actions by US President Donald Trump.
The protests have been erupting over a long list of grievances, including Trump's immigration enforcement push, the rollback of transgender rights and the war in Iran.
Organisers estimated that the first two rounds of 'No Kings' rallies drew more than 5 million people in June and 7 million in October, with expectations of 9 million participants Saturday.
Popular American musician Bruce Springsteen stole the show in Minnesota's flagship event, praising the state's people for taking to the streets over the winter in opposition to a surge of US Customs and Immigration Enforcement agents.
Demonstrations took place in more than a dozen countries, with thousands marching in Rome, London, and Paris, displaying signs opposing Israeli and US attacks on Iran.
White House spokesperson Abigail Jackson called the protesters the product of 'leftist funding networks' with little real public support, while the National Republican Congressional Committee criticised the rallies as 'Hate America Rallies'.
