Madonna performs at Stade de France on July 14, 2012 in Paris, France. Credit: David Wolff - Patrick/Getty Images

Once again, Madonna has some explaining to do.

During a concert appearance in Paris Saturday, the 53-year-old singer aired a video showing National Front party leader Marine Le Pen with a swastika on her forehead, and France's far-right political group has decided to file suit.

Intending to take legal action this week, the group is fired up over the clip, which was a used as a backdrop for her performance of "Nobody Knows Me." The controversial moment came when the leader's forehead was superimposed with a swastika, and was followed by an image similar to Nazi leader Adolf Hitler. (The video montage also includes Madonna's face merged with public figures including Pope Bendict XVI and former Egyptian president Hosni Mubarek.)

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"We cannot accept such an odious comparison," National Front vice-president Florian Philippot told the AFP. "This is just another provocation in Madonna's world tour so that people will talk about her. Marine Le Pen will defend not only her own honor but her supporters and the millions of National Front voters."

French presidential candidate Le Pen had already given Madonna advance warning that she'd file suit after the same clip aired during a Tel Aviv concert in May.

Madonna's litigious behavior isn't the only way she turned heads this weekend. Also on Saturday, she flashed her nipple and buttocks to the crowd -- her third time doing so in less than a month. (She exposed her breast on June 7, and showed off her backside on June 12.)