Labor Dawn Butler has accused police of racially profiling her after she was run over while driving in East London.
The Brent Central MP filmed her heated confrontation in Hackney with two officers who she claims wanted to know what was in the back of the car.
After being "irritable and angry", the Metropolitan Police has classified her as "Institutionally Racist".
She said, “We were two blacks in a car driving through Hackney and they thought they were going to stop us.
“You can drive anywhere you want. I mean, we don't have a police state that says you can't go from Brent to Hackney or from Chingford to Brent. You can drive anywhere you want. «
Mrs Butler, the third black member of parliament and until recently a loyal member of Jeremy Corbyn's shadow cabinet, only yesterday asked Scotland Yard Commissioner Cressida Dick to resign for failing to eradicate racism.
Labor Dawn Butler scolded social media after being stopped by police in East London
Your footage shows a uniformed policeman standing in front of her car while the voice of a policewoman can be heard on camera.
The MP says: “I have worked a lot with the police to stop and search and how the police stop and search and indeed the way you do it and how you stand out is wrong.
“Because you create an environment in which you create hostility.
"And it's irritating because you can't drive around black on a Sunday afternoon because you are stopped by the police."
Speaking to Sky News, she said: “The institution is racist. One of the other police officers came over and said, "I can't see what's in the back of your car."
“You don't have to see what's in the back of the car. Why do you need to see what's in the back of the car? What is it about?
“So there is institutional racism in the police, we know that, and it has to be eliminated. It's cancerous and needs to be cut out of the police. It's urgent, it's really urgent. & # 39;
The MP said, “I wouldn't go live with this at all, but because the other officer was so inflaming the situation, I got irritated and angry at the way she approached me.
“It's such a bad way of treating people. It's exhausting and exhausting and mentally exhausting.
“This is a police service that is supposed to monitor everyone and I understand there are issues that need to be addressed.
"But treat it fairly, don't be unfair, biased, or racist."
A chief superintendent of Met confirmed that there had been a police freeze and that the MP had voiced her "concerns".
Chief Superintendent Roy Smith said, “I just spoke to Dawn Butler on the phone.
& # 39; She gave me a very balanced report on the incident. She was positive about one officer and provided feedback on others and the stop.
"We are listening to these concerns and Dawn is entitled to raise them."
Kate Osamor MP, who is sitting next to her on the Labor back bench, replied "Hope you are well?"
Ms. Butler, who served as Jeremy Corbyn's shadow secretary for women and equality, yesterday attacked municipal police officers who had rejected the idea that children should be invulnerable to arrest.
In a scathing rebuke, she tweeted, “The problem is you are arresting children who go on bike rides or go to the shops to get a loaf of bread.
“Not all African-Caribbean boys should be viewed as criminals! I should be surprised the police liked that, but unfortunately they didn't. & # 39;
In an article published yesterday, she called on Scottish Commissioner Cressida Dick to resign for failing to eradicate "institutional racism" from within her ranks.
She wrote in Metro: “If anyone doubts the experience of colored people, the statistics are strong.
& # 39; The Met are four times more likely to use violence against black people. They stopped and searched the equivalent of one of four young black men in London during the lockdown. & # 39;
She added: "At this crucial time, the Commissioner felt it appropriate to say that" institutionally racist "is not a" useful way of describing the force "which is not only not helpful but also offensive.
& # 39; It's pretty revealing. Cressida Dick seems unable to address this long-known problem and shows no solidarity with the people who suffer most from it. Therefore, she should resign. & # 39;
City police said they were checking the episode and Ms. Butler could not be reached.