Police have moved in to clear protesters from Zuccotti Park in New York’s financial district. Members of the Occupy Wall Street movement have been camped there since September.
It was the first in a series of protests against economic inequality and one which has inspired many others around the world.
Police say there were more than 70 arrests, mostly for defying orders.
The city mayor’s office said protesters could return once tents were cleared from the park.
In a similar pre-dawn operation in California, a day earlier, police in riot gear stormed the Occupy Oakland protest site.
Officials said 33 people were arrested during the raid on the camp – which has seen repeated violence in recent weeks, as well as a murder.
For the Occupy movement – which says it is partly inspired by the Arab Spring – the ban on camping equipment will make it almost impossible for protesters to stay overnight, as the cold winter months decend.