"Down Down Mr. Trump" and "Don't weaken our nation Mr. Trump" were posters held up by some demonstrators.

Anti-Trump demonstrations in South Sudan's capital turned violent on Tuesday as people took to the streets to protest the US president's new ban on the supply of weapons to the army and rebels.

On Friday, the United States imposed a unilateral arms embargo on South Sudan, which is embroiled in a 5-year civil war. The State Department said it is "appalled" by the continuing violence perpetrated by both sides in the conflict.

Hundreds gathered outside the US Embassy and the nearby United Nations base on Tuesday morning to show their anger.

The protesters delivered a petition to the US Embassy, an embassy spokesperson confirmed.

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The petition cited the demonstrators' anger over the arms embargo and accused the US of supporting the rebels through the UN mission to South Sudan and neighbouring countries, according to a copy seen by The Associated Press.

Although the protest began peacefully, it turned violent and the crowd harassed and physically assaulted three journalists, including a reporter for the AP, a German freelancer and a reporter for the South Sudan press. None were seriously injured.

South Sudan's government wouldn't comment on the embargo but condemned the violence.

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