New York police prevented protesters from shutting down Wall Street on Thursday, arresting more than 200 people in repeated clashes with an unexpectedly small but spirited Occupy Wall Street rally.

Protesters took to the streets in rainy New York and cities across the US for a day of action seen as a test of the momentum of the two-month-old grass-roots movement against economic inequality.

Organisers and city officials had expected tens of thousands to turn out for a demonstration following the New York police raid that broke up the protesters' encampment in a park near Wall Street on Tuesday.

A crowd that disappointed organisers throughout the day grew to several thousand after the standard workday ended and labor union activists joined a march across the Brooklyn Bridge, where last month more than 700 people were arrested during a similar march.

"We certainly want to see more people mobilise and show up," said Occupy Wall Street spokesman Jeff Smith, who nevertheless said there was "a fantastic turnout."    

After tempers among police and protesters flared throughout the day, crowds grew larger and more festive after dark.
   
"This is a great night for a revolution. I've never seen anything like this in my entire life," said Daniel Reynolds, 34, a financial analyst at a venture capital firm, who joined the protests for the first time on Thursday.   

Many protesters complained of police brutality, pointing to one media image of man whose face was bloodied during his arrest and another of a woman who was dragged across the sidewalk by an officer.

Police reported seven officers were injured, including one whose hand was cut by a flying piece of glass and five who were hit in the face by a liquid believed to be vinegar.

Police barricaded the narrow streets around Wall Street, home to the New York Stock Exchange, and used batons to push protesters onto the sidewalk as they marched through the area to try to prevent financial workers getting to their desks.

Workers were allowed past barricades with identification and the New York Stock Exchange opened on time and operated normally. Protesters banged drums and yelled, "We are the 99 percent," referring to their contention that the US political system benefits only the richest 1 percent.

At the Union Square subway stop, one of the busiest in the city, protesters tried to crowd the entrance but police repeatedly moved them against the walls to make way for subway riders.

Demonstrators targeted bridges they considered in disrepair in cities such as Miami, Detroit and Boston to highlight what they said was the need for government spending on infrastructure projects to create jobs.

In St. Louis, more than 1,000 protesters marched through downtown in support of the Occupy St. Louis movement that was evicted last week from its campsite near the Gateway Arch. The Thursday march was by far the largest since Occupy St. Louis began in support of the New York demonstrators.   

In Los Angeles, hundreds of anti-Wall Street demonstrators marched through the financial district, blocking a downtown street to snarl morning rush-hour traffic, and briefly pitched tents outside a Bank of America office tower. Nearly 80 protesters were arrested in the city. - Reuters