Paris (CNN) A man has been caught on video forcefully slapping a woman after he allegedly sexually harassed her on the streets of Paris.

The man is seen walking by a streetside cafe when he picks up an ashtray from a table and throws it over customers' heads in the woman's direction. He then comes face to face with her, waving his hands, before striking a blow and turning around to walk away.

The woman, Marie Laguerre, posted CCTV footage of the incident on her Facebook account, saying that she was on her way home on Tuesday last week when the man started whistling and making noises at her, and said "dirty words that were humiliating and provocative as I passed by him."

"Bad luck, he was not the first one that day and I was tired. So I said 'shut up' as I walked away," she wrote. "Because I do not tolerate this kind of behavior. I cannot shut up and we must not shut up."

She described how the man threw the ashtray at her and started following her.

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