The police operation to clear the Occupy Los Angeles encampment is under way. For the latest updates, click through to our story.

Lucy Nicholson / Pool via Getty Images

Los Angeles Police Department officers wait on a bus to transport them to the Occupy LA encampment outside Los Angeles City Hall to evict protesters on Nov. 29, 2011, in Los Angeles, California.

Kevork Djansezian / Getty Images

Members of the Occupy LA protest group, some wearing gas masks, link arms as they await eviction on the front lawn of Los Angeles City Hall on Nov. 29, 2011.

Lucy Nicholson / Reuters

Members of the LAPD line up against protesters from the Occupy LA encampment outside City Hall on Nov. 29, 2011.

Previously on PhotoBlog:

• Reports: Raid on Occupy LA camp imminent
• Defying calls to leave, Occupy LA protesters build themselves a 'stronghold'
• Crowd swells as deadline passes for Occupy LA

Michal Czerwonka / Getty Images

Tents remain in place during the Occupy LA protest outside City Hall in downtown on Tuesday, Nov. 29, 2011 in Los Angeles.

msnbc.com staff and wires reports:

LOS ANGELES -- A raid on Occupy LA’s City Hall encampment was imminent Tuesday night as several local news sources reported that Los Angeles Police were gathering at Dodger Stadium.

The Los Angeles Times reported that Mayor Antonio Villaraigosa said he decided to evict the protesters after learning that children were staying in the camp.

Occupy LA’s Facebook page said city buses would be staged near City Hall between 8 p.m. and 4 a.m., NBC station KNBC reported.

It was not known exactly when police would clear the area out, but about half the tents were gone, the KNBC report said. 

Full story here.

Adrian Sanchez-Gonzalez / AFP - Getty Images

A protestor from Occupy LA pleads his case while next to police officers in riot gear as the deadline for eviction approaches in Los Angeles, California, on November 27. Hundreds of anti-Wall Street protesters in Los Angeles were bracing for eviction from a park near city hall, with some packing up to avoid confrontation and others digging in to resist police.

NBC News, msnbc.com staff and wire services report:

KNBC reported that Los Angeles Police Department was on "city-wide tactical alert" after the early Monday deadline for 'Occupy' movement protesters to vacate their encampment near City Hall expired.

About 1,000 additional demonstrators flooded into the area in defiance of the deadline as the village of hundreds of tents remained standing as it has for nearly two months.

According to KNBC's Angie Crouch, the crowd was the biggest since the protest began in October.

"I've seen some protesters leave the area and if police do decide to move in, the protesters have said they will be ready to be arrested as a sign of civil disobedience," she reported.

Crouch said she has seen some police outside of the encampment, including some in riot gear, but not witnessed any arrests so far. Continue reading.

Kevork Djansezian / Getty Images

People hold up signs as hundreds of Occupy LA protesters hold a rally in the front lawn of Los Angeles City Hall before the midnight deadline by Los Angeles city officials to shut down the encampment on November 27.

Kevork Djansezian / Getty Images

A protester is arrested by Los Angeles Police Department officers after he attempted to join a group of Occupy LA demonstrators who were occupying a park in front of the Bank of America building on Nov. 17, 2011 in downtown Los Angeles, Calif.

Kevork Djansezian / Getty Images

A protester battles with three Los Angeles Police Department officers as he arrested during an Occupy LA protest on Thursday.

Henny Ray Abrams / AP

Occupy Wall Street protesters and union members walk across the Brooklyn Bridge after a rally in Foley Square, Thursday night in New York City.

msnbc.com staff and news service reports:

NEW YORK — Thousands of protesters took to the streets around the U.S., including Los Angeles, Dallas, Portland, Ore., to mark two months since the movement's birth. Dozens of arrests were reported, including at least 31 in Los Angeles. 

One of the largest demonstrations was in New York, where at least 1,000 demonstrators tried to clog streets around the stock exchange. Mayor Michael R. Bloomberg and Police Commissioner Raymond W. Kelly said five of the protesters arrested were charged with felony assault and that seven police officers and 10 protesters were injured.

Read the full story and see our slideshow for more images.

Follow @msnbc_pictures