Mary Altaffer/AP Photo

Live blog of Occupy Wall Street’s “Day of Disruption” in New York City.

LIVE UPDATES:

3:12 p.m. ET - Voices from the Protest:

3:12 p.m. ET - ABC News’ Richard Esposito: Police confiscated about a dozen metal devices today ” comprised of metal sleeves welded together and designed to accommodate individuals who planned to lock themselves to the entrances of Wall Street businesses this morning.”

Police said that some of the devices were found along the route of the protest march. Others were confiscated in a truck stop early this morning.

None were actually used.

2:55 p.m. ET - ABC News’ Richard Esposito: By mid afternoon 175 people had been arrested by police including one for throwing a liquid into the face of police officers.

There were at least two reports of liquid being tossed into the faces of officers.

The most serious injury reported so far occurred when one officer was struck with piece of glass in the shape of a star that had been hurled at him allegedly by a protester. The officer was being treated for lacerations to the hand.

The mostly peaceful, if occasionally tense day of protests was twice marred by scuffles with police.

However police acknowledged that for the most part the morning protests were peaceful and, “people were able to get to and from their offices” according to Deputy Commissioner for Public Information Paul Browne.

2:43 p.m. ET - ABC News’ Alyssa Newcomb: A protest of a few hundred people, primarily NYU students, has overtaken Union Square. They are demonstrating tuition hikes and chanting “out of the stores and into the street.”

1:35 p.m. ET - ABC News’ Richard Esposito: Officials report there are now about 100 arrests in connection with today’s occupy Wall St protests.

1:22 p.m. ET - ABC News’ Alyssa Newcomb:

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1:15 p.m. ET - ABC News’ Alyssa Newcomb: It’s cold and a freezing rain shows no sign of letting up. Will def test the resolve…. By my estimate, number of people is dropping.

12:36 p.m. ET - ABC News’ Richard Esposito: Mayor Bloomberg told an audience of business leaders this morning that the protests are a dire sign of the public’s economic fears.

“We’re coming to a point where Occupy Wall Street is just the beginning, the Tea Party is just the beginning,” he said. “The public is getting scared. They don’t know what to do, and they’re going to strike out, and they don’t know where.”

The remarks were made at a panel on immigration that was not on the mayor’s public schedule. It was organized by the Partnership for New York City and the Partnership for a New American Economy.

12:32 p.m. ET - ABC News’ Erin McLaughlin: A group of about a hundred calmly but loudly took the subway from Zuccotti Park to the Wall St. stop and are now marching to Wall St. There are barricades blocking a lot of streets so the protesters are snaking through the financial district chanting “this is what a police state looks like” and “whose streets? Our streets!”

11:41 a.m. ET - ABC News’ Erin McLaughlin: The protesters are splitting up into two groups (following leaders with black and red flags) to head to Wall st. One group marching, the other taking the subway.

11:27 a.m. ET - ABC News’ Richard Esposito: As Occupy Wall Street took to the streets of lower Manhattan, minor clashes with police and classic civil disobedience — passive resistance — led to about 75 arrested by late morning, according to police officials who said 40 of the 75 arrests occurred at Nassau and Pine Streets.

Those were for obstructing traffic and resisting arrest.

“Otherwise it was orderly, with employees and residents using IDs to enter Wall St in vicinity of the exchange,” said one senior official.

One protester threw a liquid that stung – possibly vinegar -in the face of officers. The protester who threw the liquid was arrested, said police.

11:19 a.m. ET - ABC News’ Erin McLaughlin: Protesters in Zuccotti Park are taking down the metal barricades and standing on them in the park, while chanting “take back wall street.” Police started pushing back with batons to replace the barricades while protesters chant “the whole world is watching.”I saw police passing around plastic restraints seemingly in anticipation of arrests.

10:51 a.m. ET - ABC News’ Alyssa Newcomb: Hip-hop mogul Russell Simmons participated in the march on Wall Street this morning. He is now in Zuccotti Park and said he is there to bring energy to the movement. He plans on participating in the other demonstrations that are scheduled for today.

10:29 a.m. ET - ABC News’ Alyssa Newcomb: Protesters have marched from Wall St. back to Zuccotti Park. There are chants of “setup the tents” and other protesters are telling the NYPD they need to live up to the department’s slogan of “courtesy, professionalism, respect.”

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10:14 a.m. ET - ABC News’ Aaron Katersky:

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9:28 a.m. ET - ABC News’ TJ Winick: Just overheard from two middle age protesters – ”Do you know what the plan is now?” “I don’t think there is one.”

9:04 a.m. ET - ABC News’ TJ Winick:

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9:01 a.m. ET - ABC News’ Aaron Katersky: The demonstrators have been trying to approach the NYSE from every possible direction, blocked at each by a wall of NYPD. While arrests happen there is a marching band like something out of mardi gras, protesters dressed as trees and in other costumes…all mingling with business suited men and bewildered children trying to get to school. With the music, chants, cops, costumes the scene is somewhat absurd.

8:53 a.m. ET - ABC News’ TJ Winick: Chants of “Shame” and “The whole world is watching” as arrests are being made.

8:48 a.m. ET - ABC News’ Dan Harris: At corner of Nassau and Pine. Several hundred protesters have shut down intersection a block or so from NYSE. Police just warned people to get out of the street. Arrests appear imminent.