Footage from a march to the residence of St Louis Mayor Lyda Krewsdon shows a man pointing a rifle at protesters while a woman waves a handgun in the air.

The incident happened on Portland Place, which is a private street in the city.

The demonstration was over a now-deleted video where Mayor Krewson read out the names and addresses of people in favor of defunding the local police department.

The US president’s action came a day after he retweeted footage of protesters clashing in Florida in which a Trump supporter could be heard to say: “White power! White power!”