African-American actress Daniele Watts was "accosted and forced into handcuffs" by LA police who allegedly mistook her for a prostitute.
The Django Unchained star said she was approached and asked for her ID by two police officers in Los Angeles after kissing her white husband, Brian James Lucas.
When Watts refused, she was handcuffed and placed in the back of their police car.
According to Watts and Lucas' joint Facebook pages, the actress was talking on her mobile phone to her father when she was approached by a police officer.
When she refused, the police placed her in the back of their squad car while they checked her identity.
A distraught and angry Watts wrote: "Today I was handcuffed and detained by two police officers from the Studio City Police Department after refusing to agree that I had done something wrong by showing affection, fully clothed, in a public place.
"When the officer arrived, I was standing on the sidewalk by a tree. I was talking to my father on my cell phone. I knew that I had done nothing wrong, that I wasn't harming anyone, so I walked away.
"A few minutes later, I was still talking to my dad when two different police officers accosted me and forced me into handcuffs."
Pictures of the incident taken by Watts' husband show the actress looking distraught as one of the police officers talks her.
"As I was sitting in the back of the police car, I remembered the countless times my father came home frustrated or humiliated by the cops when he had done nothing wrong," she added in her Facebook post.
"I was sitting in that back of this cop car, filled with adrenaline, my wrist bleeding in pain, and it occurred to me, that even there, I STILL HAD POWER OVER MY OWN SPIRIT.
"Those cops could not stop me from expressing myself… They could not force me to feel bad about myself. Yes, they had control over my physical body, but not my emotions. My feelings. My spirit was, and still is FREE."
She added: "I will continue to look any "authority figure" in the eye without fear. NO POLICE OFFICER OR GOVERNMENT OFFICIAL IS MORE POWERFUL THAN ME. WE ARE EQUALS."
Actress mistaken for 'a prostitute'
Lucas posted on his Facebook page that he thought that the person who called the police had decided they looked like a prostitute and a client.
He wrote: "From the questions that he asked me as D was already on her phone with her dad, I could tell that whoever called on us (including the officers), saw a tatted RAWKer white boy and a hot bootie shorted black girl and thought we were a H* (prostitute) & a TRICK (client).
"What an assumption to make!!! Because of my past experience with the law, I gave him my ID knowing we did nothing wrong and when they asked D for hers, she refused to give it because they had no right to do so.
"So they handcuffed her and threw her roughly into the back of the cop car until they could figure out who she was. In the process of handcuffing her, they cut her wrist, which was truly NOT COOL!!!"
A spokesman for the Los Angeles Police Department told Variety magazine there was no record of the incident as Watts was not brought into the station for questioning.
The actress is best known for her role as CoCo in Quentin Tarantino's slavery film Django Unchained.