He added that he was "shocked" by violence near the Arc de Triomphe and graffiti sprayed onto the monument, a symbol of the country with the Tomb of the Unknown Soldier from World War I.

A few dozen protesters have symbolically gathered under the Arc de Triomphe in Paris to sing France's national anthem as others clashed with police near the famous monument at the top of the Champs-Elysees avenue.

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