OAKLAND - The display of police force in Oakland and Atlanta has unnerved some anti-Wall Street protesters.
While demonstrators in other cities have built a working relationship with police and city leaders, they wondered on Wednesday how long the good spirit would last and whether they could be next.
Will they have to face riot gear-clad officers and tear gas that their counterparts in Oakland, Calif., faced Tuesday? Or will they be handcuffed and hauled away in the middle of the night like protesters in Atlanta?
"Yes, we're afraid. Is this the night they're going to sneak in?" said activist William Buster of Occupy Wall Street, where the movement began last month to protest what they see as corporate greed.
"Is this the night they might use unreasonable force?" he asked.
An Iraq War veteran marching with demonstrators suffered a cracked skull in the chaos between officers and protesters in Oakland, further raising concern among some in the movement. Scott Olsen, a 24-year-old Marine veteran, was in critical condition Wednesday after he had been struck, said a spokesman for Highland Hospital in Oakland.
It was not clear exactly what type of object hit the veteran or who might have thrown it, though the group Iraq Veterans Against the War said it was lodged by officers. Police Chief Howard Jordan said at a news conference that the events leading up to Olsen's injury would be investigated as vigorously as a fatal police shooting.
The message, meanwhile, from officials in cities where other encampments have sprung up was simple: We'll keep working with you. Just respect your neighbors and keep the camps clean and safe.
Business owners and residents have complained in recent weeks about assaults, drunken fights and sanitation problems. Officials are trying to balance their rights and uphold the law while honoring protesters' free speech rights.
"I understand the frustration the protesters feel ... about inequity in our country as well as Wall Street greed," Baltimore Mayor Stephanie Rawlings-Blake said. "I support their right to free speech but we also have rules and laws."
Some cities, such as Providence, R.I., are moving ahead with plans to evict activists. But from Tampa, Fla., to Boston, police and city leaders say they will continue to try to work with protesters to address problems in the camps.
In Oakland, officials initially supported the protests, with Mayor Jean Quan saying that sometimes "democracy is messy."
But tensions reached a boiling point after a sexual assault, a severe beating and a fire were reported and paramedics were denied access to the camp, according to city officials. They also cited concerns about rats, fire hazards and public urination.
Demonstrators disputed the city's claims, saying that volunteers collect garbage and recycling every six hours, that water is boiled before being used to wash dishes and that rats have long infested the park.
When riot gear-clad police moved in early Tuesday, they were pelted with rocks, bottles and utensils from people in the camp's kitchen area. They emptied the camp near city hall of people, and barricaded the plaza.
Protesters were taken away in plastic handcuffs, most of them arrested on suspicion of illegal lodging.
Demonstrators returned later in the day to march and retake the plaza. They were met by police officers in riot gear. Several small skirmishes broke out and officers cleared the area by firing tear gas.
The scene repeated itself several times just a few blocks away in front of the plaza.
Tensions would build as protesters edged ever closer to the police line and reach a breaking point with a demonstrator hurling a bottle or rock, prompting police to respond with another round of gas.
The chemical haze hung in the air for hours, new blasts clouding the air before the previous fog could dissipate.
The number of protesters diminished with each round of tear gas. Police estimated that there were roughly 1,000 demonstrators at the first clash following the march. About 100 were arrested.
On Wednesday, Oakland officials allowed protesters back into the plaza where their 15-day-old encampment had been raided but said people would be prohibiting from spending the night, potentially bringing another clash with police.
About 1,000 people quickly filled the plaza, but late at night, many of them filed out and began marching down nearby streets.
A reporter at the scene says police erected wooden barricades to block the march, but the protesters veered off as a group and continued down another street.
There were no signs of clashes between the two sides.
It wasn't immediately clear how many people were left in the plaza, where some had vowed to spend the night.
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