UPDATED, Dec. 7, 2014, 9:21 a.m. ET

Protests against police brutality continued on Saturday across the United States, after Wednesday's grand jury decision not to indict a white NYPD officer in the chokehold death of Eric Garner, a black man.

Thousands of people condemned the decision in multiple cities, including Oakland, Chicago, Miami, Washington, D.C., Providence and New York City. In addition to holding signs, they chanted, "Black lives matter" and "I can't breathe," which refers to Garner's last words before he died in July.

Anger over Garner's death has coincided with mass protests in response to another grand jury decision not to indict former Ferguson, Missouri, police officer Darren Wilson in the shooting death of Michael Brown in August.

See also: How Twitter and Facebook helped shut down Lower Manhattan for Eric Garner

New York

In New York City on Saturday, a group of protesters organized multiple die-ins at Grand Central station, one in the afternoon and another again in the evening. They followed the lead of other demonstrators who faked their deaths at many locations, including Manhattan's iconic midtown Apple Store, over the past few days.

Following the afternoon die-in, protesters left the station with their hands up, in reference to Brown, the unarmed black teenager who was reportedly shot with his hands raised in the air.

Protesters also marched through Times Square, just a few block from Grand Central.

"One system for everyone" A video posted by @takshun1 on Dec 12, 2014 at 12:48pm PST

Back at Grand Central later in the evening, protesters pretended to choke themselves, a symbol of Garner's death.

And later they crowded a Toys R Us, Forever 21 and Disney store in Times Square. On Friday night, protesters not only flooded an Apple store, but also the flagship Macy's Department store in Herald Square.

Some protesters now coming out of Toys R Us. So far there's been no confrontations with police. #EricGarner — Shimon Prokupecz (@ShimonPro) December 7, 2014

Garner's mother moved by demonstrations

Meanwhile, Gwen Carr, Garner's mother, said she was moved by Friday's peaceful demonstrations.

"It is just so awesome to see how the crowds are out there," Carr said, adding that she got stuck in her car after protests shut down traffic on Friday.

"I was just so proud of that crowd," she said. "It just warmed my heart."

Garner's widow, Esaw Garner, said she saw protesters from her apartment window, and told her son, "Look at all the love that your father's getting."

Also on Saturday, Esaw visited the location where Garner was killed by New York Police Department officer Daniel Pantaleo, and broke down in tears.

Berkeley

While protests were mostly peaceful elsewhere, Berkeley's turned violent as some smashed store windows. At least two officers were injured, NBC News reported, including one who was hit with a large sandbag, A Berkeley Police spokesperson told NBC that six people were arrested.

Other demonstrators tried to stop the vandals and fights broke out. The protest group separated into the peaceful and the mob-like, as the former retreated.

#BerkeleyPD: "Some in the crowd turned violent & threw rocks & other projectiles at officers. One officer was injured." — KenWayne (@KenWayne) December 7, 2014

Authorities used tear gas and smoke bombs to disperse the demonstrators, some of whom used hammers to break ATMs and spray painted graffiti, according to CBS San Francisco.

KTVU -

The violence prompted police to close off University Avenue and the I-80 offramp nearby, according to CBS.

Berkeley protesters being arrested. Walked right into kettle. pic.twitter.com/hDSpsWgqu9 — Bill (@DefendWallSt) December 7, 2014

Atlanta

In metro Atlanta, protesters organized a day of planned rallies, which have so far been peaceful. More than 200 staged a die-in on the 17th Street overpass, the Atlanta Journal-Constitution reported.

"I’ve been in Marietta [a suburb in metro Atlanta] for 47 years and I’ve never seen so many people come out in the rain for something like this, " one protester named Travis Freeman told the newspaper. "It's that important."

Hollywood

At least 150 demonstrators shut down a stretch of Hollywood Boulevard after gathering at noon for a march and protest on Saturday, according to a local CBS affiliate.

Crowd gathered for #blackoutHollywood protest. Just starting March "I can't breathe" is chant pic.twitter.com/rnvWOmE16V — Greg Mills (@GregMillsTVNews) December 6, 2014

Hundreds dressed in black marching down Hollywood Blvd. "don't shoot" chant now #blackoutHollywood pic.twitter.com/9DzlTebjoA — Greg Mills (@GregMillsTVNews) December 6, 2014

And just like in many other cities, the protesters also organized a die-in.

The protesters also marched on Hollywood's walk of fame.

In addition, a sit-in on the corner where the Los Angeles Police Department shot and killed a man who was allegedly wielding a knife was held.

Houston

A large group of protesters also took it to the streets of Houston, Texas, marching through the city's Galleria, the largest mall in Houston, next to the Gucci and Microsoft stores, among others.

Large group on 4 corners outside Galleria right now protesting Eric Garner/Michael Brown decisions #khou pic.twitter.com/K7RUO3ROqj — Larry Seward (@LSewardKHOU) December 6, 2014

There were no reported arrests related to the protest, according to the Houston Chronicle.

Portland

In Portland, protesters crowded the Pioneer Place Mall and shouted "I can't breathe," a symbol of Garner's last words as he was held in a chokehold. The phrase has become a common chant amongst protesters nationwide.

San Francisco

In San Francisco, protesters took to blocking Market Street in the Financial District once again. They sat on the street and the tracks of a street car line, prompting arrests.

Protestors are blocking both dirs of Mkt. St, @ Powell. SFPD warning they will be arrested. #mapit pic.twitter.com/KH2u4clcF0 — Cbarnard (@CornellBarnard) December 6, 2014

SFPD now arresting protesters who are blocking Mkt. St. in both directions. #mapit pic.twitter.com/nUcuDmkDFQ — Cbarnard (@CornellBarnard) December 6, 2014

Riverside, California

A driver that plowed through a police brutality protest in Riverside struck at least one person who did not appear to suffer major injuries, according to NBC's Los Angeles affiliate.

A BMW just ran down protestors blocking university at mission at the #Riverside #ICantBreathe protest — Cassandra (@CassandraRules) Dec 06 2014

This isn't the first time a protester had been struck by a vehicle during recent nationwide marches.

UPDATED 7:40 p.m. ET to include Portland and San Francisco protests. UPDATED 11 p.m. ET to add Riverside and Berkeley demonstrations.

Additional reporting by Brittany Levine