France's Council of State has ruled Friday that security forces have a right to use controversial high-velocity rubber ball launchers for crowd control.
Interior Minister Christophe Castaner acknowledged that the weapon - used more than 9,200 times since the start of the yellow vest protests - could cause injuries.
In Morlaix, Brittany, two police officers were injured and two protestors arrested, the regional authority reported.
As in previous weeks, protesters on Saturday carried French flags and held signs attacking Macron as out of touch or calling for referendums tabled by citizens.
The Interior Ministry said 80,000 security officials had been mobilised, including 5,000 in Paris.
The government says around 2,000 people have been injured in protests since the movement began November 17, including at least four serious eye injuries.
Yellow Vest protests are taking place across France today as demonstrators continue to show their discontent with President Emmanuel Macron's leadership.
Meanwhile, a group of 59 lawyers published an open letter on the France Info news website denouncing what they said was harsh treatment of yellow vest protesters in the courts. Macron made multiple concessions that failed to extinguish the anger of the yellow vest movement, which is named after the fluorescent protective garments the protesters wear. The package, estimated at 10 billion euros ($11.46 billion), includes a 100-euro monthly increase to the minimum wage.