(CNN) Riot police unleashed tear gas at so-called yellow vest protesters in central Paris who marched Saturday for the 23rd consecutive weekend.

The French capital was the scene of chaos as police confronted protesters, who set off small fires. Video showed heavy black smoke in the air. Police also used water cannons to disperse the crowds.

Officers counter protesters in Paris on April 20, 2019.

The Paris prosecutor's office said 182 yellow vest protesters were placed in police custody.

This is the first demonstration since the devastating fire this week at the Notre Dame cathedral. The Interior Ministry said some 27,900 people demonstrated across France, including 9,000 in Paris.

A man runs by a burning motorbike during a yellow vest demonstration in Paris on April 20, 2019.

The protesters, who chanted, sang and played musical instruments as they marched, are rallying against economic injustice. Some say the hundreds of millions of dollars in donations to rebuild Notre Dame is a glaring sign of the inequalities in the country.

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