Daniele Watts was humiliated for simply showing public affection after cops allegedly mistook her for a prostitute and she refused to show ID.

Daniele Watts burst into tears after police detained her for kissing her white boyfriend. They mistook her for a prostitute.‘I remembered the countless times my father came home frustrated ... by cops when he had done nothing wrong,’ Watts wrote on Facebook.

Los Angeles police are investigating whether race played a role in the handcuffing and detention of a black actress last week after she was spotted kissing a white man in a car.

Daniele Watts, who appeared in “Django Unchained,” revealed the incident on her Facebook page last week.

“Today I was handcuffed and detained (for) showing affection, fully clothed, in a public place,” Watts wrote, referring to her boyfriend, Brian Lucas.

The LAPD confirmed that it detained Watts and Lucas around 3 p.m. on Thursday, but said that officers were responding to a 911 call complaining of “indecent exposure” by two people in a silver Mercedes.

But that didn’t satisfy Lucas.

“From the questions that (the cop) asked, I could tell (he) thought we were a HO (prostitute) and a TRICK (client),” Lucas posted on his Facebook page.

Lucas gave cops his ID, but Watts refused, leading to her detention and cuffing. Lucas posted a photo of blood dripping from a puncture made by the restraints, he said.

Watts burst into tears after cops handcuffed her, saying on Facebook that she was crying "for a country that calls itself 'the land of the free and the home of the brave' and yet detains people for claiming that very right."

She also said she remembered humiliation suffered by her father, she said.

“I remembered the countless times my father came home frustrated or humiliated by cops when he had done nothing wrong," she wrote. “I felt his shame, his anger.”

So did countless others on social media.

“F--- the police,” one commenter wrote.

Actor Amin El Gamal was a bit more diplomatic on Twitter.

"@danielewatts is one of the most beautiful and talented souls i know. Shame on you @LAPDHQ," he wrote.

The LAPD said it was conducting an internal investigation of the incident.

Ironically, Watts once played a cop in an episode of “Weeds.”

It certainly not the first time LA cops have been red-faced in a racial incident.

Black film producer Charles Belk was handcuffed and detained for six hours on his way to a pre-Emmy party after police confused him with a suspected bank robber.