PHOTO: Former Philadelphia Police Captain Ray Lewis Just Before His Arrest Today #N17 #OccupyWallStreet

Photo of the day: "Organic Locally Grown Revolution" #HappyBirthday #N17 #OccupyWallStreet

Cartoon of the day: "The End Is Near" via @NewYorker #OWS #N17

UPDATE: Situation diffused. Cops have exited #ZuccottiPark and returned to park periphery. #OccupyWallStreet #N17

NYPD have entered park. Riot ensuing. Expecting mass arrests. Crowd chanting "Peaceful" #OccupyWallStreet #N17

UPDATE: Police Checkpoints Again Being Enforced To Walk Down Wall Street. Work ID's Only. #N17 #OccupyWallStreet

Occupying the barricades. #ZuccottiPark #N17 #OccupyWallStreet

Occupiers returned en masse to #ZuccottiPark. Barriers have been pushed back, some arrests have been made. #N17 #OWS

A simple request. #N17 #OccupyWallStreet #NYPD

UPDATE: The barriers have NOT come down, but they're allowing people back into #ZuccottiPark now #N17 #OccupyWallStreet

Crowd to #NYPD: "They want your pensions too!" #N17 #OccupyWallStreet

Arrests have ceased for now. Crowd chanting "Banks got bailed out, we got sold out!" #N17 #OccupyWallStreet

No joke. NYPD van has a bag of donuts in it. #N17 #OccupyWallStreet

Ret. Captain Lewis of the Philadelphia PD was just arrested in front of me. #N17 #OccupyWallStreet

Arrests have begun. #TheWorldIsWatching #N17 #OccupyWallStreet

NYPD are now warning crowd that they will now be arresting people who are not on sidewalks. #OccupyWallStreet #N17

Marchers chanting to police "Who are you protecting?" #NYPD #OccupyWallStreet #N17

Hundreds have marched down to join us next to the NYPD blockade at the corner of Pine & Nassau. #OccupyWallStreet #N17

NYPD has blocked the march from moving toward Wall Street with a huge mass of cops. #N17 #OccupyWallStreet

Ret. Philadelphia Police Captain Lewis here serving as "NYPD Watch" for occupiers on the march #OccupyWallStreet #N17