Disturbing moment: San Francisco woman violently arrested for wrongdoing in crime-ridden city

A San Francisco woman says she was the victim of police brutality after she was violently thrown against a wall by police officers who accused her of running a red light. The result was a concussion and a dislocated shoulder, among other injuries.

Christiana Porter, 34, said she was wrongfully stopped on July 29 while crossing the street in front of a police car in Richmond County.

“What did I do wrong? I'm just crossing the street,” Porter told local Fox affiliate KTVU on Monday.

The video shows a police officer driving against the direction of traffic to confront Porter, who was wearing headphones and apparently unaware that he was trying to get her attention.

After getting out of his police car, Officer Porter pushes him into a wall.

Christiana Porter (pictured), 34, says she was wrongfully stopped on July 29 while crossing the street in front of a police car in the Richmond District.

A passerby's video shows Porter screaming: “I will not resist.”

“Honestly, as a black woman, I'm just trying to stay alive. I was thinking about my five children and trying to get home to my children,” she said.

Additional officers arrived at the scene with sirens blaring to assist the violent officer.

“I just don't trust them anymore,” Porter said. “I really don't trust them. I feel like they're abusing their power and authority and using it to abuse, torture and harass civilians.”

Officer Josh McFall justified the use of force by claiming Porter was uncooperative, refused to show her identification and kept her hands visible.

He told a witness that he felt compelled to act because he was concerned that there might be weapons hidden in Porter's pockets or purse.

“I didn't mean for it to happen, but if people put me in this position, I have no choice,” McFall told the witness.

Porter suffered a concussion, a dislocated acromioclavicular joint and nerve damage.

She claims the officer ignored her statement that she was a victim of domestic violence, which only worsened her trauma.

“I'm not a threat, I'm just trying to get my life back on track,” she said through tears. “When I told him I was a survivor, he just said, 'I don't care, that's not important right now.'”

Her lawyers argue that the officer violated department policy by issuing her a ticket for crossing the roadway without an immediate safety threat. They also criticize the disproportionate use of force for a minor offense and question why Porter was on their radar given the city's epidemic of serious crime.

The video shows a police officer driving against the direction of traffic to confront Porter, who was wearing headphones and apparently unaware that he was trying to get her attention.

After getting out of his police car, officer Porter pushes him into a wall

“There are more serious crimes that the San Francisco Police Department should be dealing with, especially since they are allegedly understaffed,” said attorney Lateef Gray.

Attorney Treva Stewart said Officer McFall's actions were driven by personal anger rather than legitimate police concerns, calling the incident an example of “disrespect for a police officer.”

Representative Phil Ting's recent bill decriminalizes crossing the street on a red light, except in cases where there is a danger to pedestrians or motorists.

“If something happens that endangers the pedestrian or the driver, then there should be a report,” Ting said.

The incident sparked outrage and renewed calls for police reform.