NEW YORK (CBSNewYork/AP) — Videos of some of the 80 arrests of demonstrators at Saturday’s “Occupy Wall Street” protests have made their way online.

Dozens of videos from the week-long protest have surfaced on YouTube. Many show the hundreds of protestors marching through the streets of lower Manhattan. Others show protestors being arrested, demonstrators yelling or chanting at police and officers trying to barricade streets.

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One of the YouTube videos appears to show officers using pepper spray on women who were already cordoned off. Another shows officers handcuffing a man after pulling him up off the ground, blood trickling down his face.

LISTEN: 1010 WINS’ Terry Sheridan reports

Protesters have been living on pizza and sleeping on wet sleeping bags in Zuccotti Park where the march began.

On Saturday, demonstrators said they were protesting against bank bailouts and the mortgage crisis. The march proceeded uptown along Broadway toward Washington Square Park before moving farther to Union Square Park.

That’s where demonstrators and officers clashed. Police moved in with large rolls of orange mesh, corralling some of the participants and binding hands with plastic zip ties.

GRAPHIC CONTENT: Watch the video below:

Adam Dirks was one of those arrested and the video of his bloody head is making the rounds on online.

“I just remember I was walking and the people next to me were just walking in a line and they got body checked by an officer onto the ground really hard,” he told 1010 WINS’ Terry Sheridan.

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Dirks said the officer then grabbed his bag.

“I tried to just pull away and then I got thrown into the ground by maybe like three to five officers, it was hard to tell, one of the officers was in denim jeans,” said Dirks. “My face got grounded into the ground pretty hard.”

GRAPHIC CONTENT: Watch the video below:

Police say the arrests were mostly for blocking traffic. Charges include disorderly conduct and resisting arrest. But one demonstrator was charged with assaulting a police officer. Police say the officer involved suffered a shoulder injury.

“Everyone who was around me, I saw nothing that remotely could have been considered threatening or remotely would have justly called for the actions that were taken on a lot people like pepper spray and batons,” Dirks said.

Protest spokesman Patrick Bruner criticized the police response as “exceedingly violent” and said the demonstrators sought to remain peaceful.

After viewing CBS 2 and YouTube videos of the arrests, former NYPD officer and security expert Bill Stanton said it appears to him police behaved legally and responsibly.

“With law enforcement you have mace as a deterrent against danger,” he said. “When you feel your safety or someone else’s safety is in danger that’s a deterrent and that may be what happened.”

A police spokesman had no comment about the videos or the arrests, but the NYPD has called every arrest justified.

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