My wife had a problem with a bangladeshi karwa driver harrasing her. She gave him a piece of her mind, got out when he slowed down(yes slowed, not stopped) for a roundabout which caused him to stop blocking traffic. He tried to pull alongside her to demand his fare and she made enough of a scene (and knowing my wife she probably gave me a censored version) that an arabic man got out of the car behind the taxi and then the taxi took off. The arabic man was also kind enough to give her the short remaining ride to our house.