"When she stopped at a stop sign, near the Grove here in Los Angeles, her driver-side window was down," said Morales' attorney, Neama Rahmani.
They say the Los Angeles Police Department fired a rubber bullet that went through Morales' window and shot her in the face. Morales' passenger drove her to a hospital.
"We believe a 40mm (rubber) bullet travels through her open car door window and strikes her in the left side of her skull in the temple area right next to her eye socket," Rahmani said. "It fractures her skull, results in a brain bleed, a traumatic brain injury.
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"We are still waiting for the body cam footage and video evidence from protesters who were there. We believe LAPD was shooting from their vehicles in the direction of Ms. Morales, I don't know if they were targeting her intentionally or just grossly negligent."
The claim filed against the city of Los Angeles seeks $10 million.
"We ask for the high-end of the range because we want to protect our client and make sure that she's compensated if she has to deal with life-long brain injury," the attorney said.
The LAPD did not comment on the claim.
Rahmani, a former federal prosecutor, pointed to research about the use of rubber bullets and how they can be lethal in some circumstance.
"Rubber bullets are in theory supposed to be, in theory, non-lethal," he said. "But there's a small percentage of cases that do result in a fatality. That number seems to be somewhere less than 5%. But that's still far too much."