Cardi B unloads on a fan at a concert in London and uses a microphone in Beatdown

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Cardi B isn't standing or sitting for anyone caring about her, even her fans, as she left at the end of her show in London on Friday night.

Cardi had just finished her performance at the Wireless Festival and was front and center among the fans. She was sitting on a security guard's shoulder when she looked out into the crowd and started using her microphone to push someone away.

We can't tell exactly from the video what happened that pissed her off so much, but she took some good shots with the mic before unleashing it on the crowd.

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It looks like there was no more conflict after that. We reached out to Cardi's camp for more details on what happened.

It was her second night in a row in concert – just last night she was in Norway...the first of several European dates she has coming up.

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