Occupy Wall Street, New York

Started: 17 September

Cleared: 15 November



What happened: Hundreds of police officers descended on the birthplace of the global Occupy movement before dawn this morning in a drive to remove around 200 people camping in Zuccotti Park. Dressed in riot gear and brandishing plastic shields and batons, the police handed out notices from park owners Brookfield Office Properties asking the protesters to leave the park for health and safety reasons. While many went peacefully, others resisted eviction, chaining themselves together and staying in the camp's kitchen tent. 142 protesters were arrested in the park, and between 50 and 60 in the streets nearby. By 4.30am, the park had been cleared of people, tents and sleeping bags.

What's happened since: Within hours, the National Lawyers Guild obtained a court order allowing the Occupy movement to return to Zuccotti Park. Hundreds of protesters proceeded to march back to the site of their camp and demanded to be let back in. But police refused to comply. At least a dozen protesters who had attempted to occupy Duarte Square have been arrested.

Eventually the New York state supreme court granted a restraining order against Occupy protesters re-establishing an encampment in the park. The park's owners said that demonstrators were "absolutely" still allowed to assemble there but not set up tents and tarps again.

Portland, Oregon

Started: 6 October

Cleared: 13 November

What happened: Citing rising crime rates and police overtime costs, the city's mayor gave the order to clear the site after his calls for the protesters to leave fell on deaf ears. Police moved in to two sites at Chapman and Lownsdale parks where the protesters were staying and drove them into the street. Dozens resisted eviction and more than 50 were arrested. Hundreds then gathered in the city, blocking traffic and chanting. Most left by nightfall.

What's happened since: Organisers are adamant that, though their physical base has gone, the movement continues. A General Assembly on Monday night drew hundreds and discussion centered on where next to occupy, according to a report on Salon.com.

Oakland

Started: 10 October

First cleared: 25 October

Cleared again: 14 November

What happened: In their first attempt to clear the Frank Ogawa Plaza, police used tear gas and bean bag projectiles to evict protesters, at least 85 of whom they arrested. The move backfired dramatically when 24-year-old Scott Olsen, a Marine Corps veteran, was injured high on the head, organisers say, by a tear gas canister and admitted to hospital in critical condition. Police and city officials have not said how they think he was hurt, and an investigation has been opened. Facing criticism over the incident, Mayor Jean Quan allowed protesters to return temporarily to the plaza, and the camp's numbers grew. But, after a fatal shooting in the area last week, city officials intensified their efforts to encourage the protesters to leave. In the early hours of yesterday, police returned to the site. This time, protesters put up little resistance and, though there were more than 30 arrests, there were no reports of injuries.

What's happened since: Although hundreds of protesters converged once again on the Plaza yesterday evening, the area was quiet this morning. But the protesters now intend to march from the Plaza to UC Berkeley at noon today and join up with a student strike and 'teach-out' on campus. Quan has boosted suspicions about the coordinated nature of recent crackdowns, saying in an interview that she had recently been involved in a conference call "with 18 cities across the country who had the same situation where what had started as a political movement...ended up being a encampment that was no longer in the control of the people who started [it]."

Salt Lake City

Started: 6 October

Cleared: 12 November

What happened: Police moved in to Pioneer Park a day after a homeless man was found dead in an Occupy tent. The cause of death remains unknown, but it was the straw that broke the camel's back for local authorities, who had become increasingly concerned over crime levels in and around the camp. On Saturday, police came to remove all protesters and tents to the chants of activists, including 'This is why we call you pigs' and 'This is what a police state looks like'. Despite the tensions, the eviction went relatively peacefully. Nineteen people were arrested.

What's happened since: Some protesters are reported to have gone to join the Occupy camp at Ogden, about 30 miles north of the Utah state capital. Others have insisted they want to continue the protest. On Sunday they marched through the streets of Salt Lake City. The office of Mayor Ralph Becker said on Twitter that protests could continue at the park as long as there were no tents.

Denver

Started: Early October

First site cleared: 14 October

Second site cleared: 12 November

What happened: Police broke up the park that had been the birthplace of the city's Occupy movement in mid-October, arresting 24 people after they refused to disperse. Since then, relations between the authorities and the protesters have been fraught. And on Saturday evening sixteen more people were arrested when the police used tear gas to clear another camp at Civic Center Park, accusing the protesters of blocking right of way. Three more people were arrested on Sunday after a folding table used to serve food was labelled an obstacle to right of way.

What's happened since: The mayor of Denver has said he is pleased with the way the city has dealt with the Occupy movement, and that the authorities would remain "consistent with our policies". In other words, protesters should expect to be met with tough policing.

Atlanta

Started: 7 October

Cleared: 26 October

What happened: Mayor Kasim Reed ordered the police to clear the camp at Woodruff Park after deciding that the security situation was "deteriorating". He spoke of having seen a "gentleman with an AK-47 assault rifle" and having heard that the fire code was being violated. (The Occupy movement said the man had nothing to do with them and denied posing a fire hazard.) Fifty-three people were arrested in the eviction.

What's happened since: After the raid, Occupy Atlanta set up camp in a city baseball field, and then on the Martin Luther King Jr national historic site. They subsequently returned to Woodruff Park, which has been used as an on-and-off base. At least 24 people have been arrested since the initial raid.