Mayor Bloomberg said Friday that he's going to start turning the screws on the Occupy Wall Streeters.
The city is planning to take a harder line on demonstrators camping out in Zuccotti Park - and insist on permits every time they want to march through Lower Manhattan, he said.
"We will start enforcing that more," Bloomberg said on his weekly radio show.
The protesters have a Constitutional right to demonstrate and have mostly been "peaceful," the mayor added.
"There's not been any of the kind of craziness you see elsewhere," he said. "You may not like it, but these people have generally obeyed the law.
Still, the month-long occupation has taken a toll on local businesses and residents and the city needs to come up with "ways to let people protest without infringing those who don't want to protest," he said.
"I'm not trying to duck it," Bloomberg said. "But, you know, it's just not so easy. You can't just walk in and say 'Hey, you're out of here'."
"Zuccotti Park is not a public park," he said. "It's a private piece of property. They have to have it open 24/7 to anybody that wants to go in there by their agreement with the city."
Part of the difficulty for the city is that OWS is made of a number of different groups and nobody speaks for them all.
"It's a little bit complicated by there's nobody to work it out with," he said. "There just is not any one group, one idealogy, one objective, one person to negotiate with."