Demonstrators wearing yellow vests shout during a march Saturday, Dec. 8, 2018 in Marseille, southern France. The grassroots movement began as resistance against a rise in taxes for diesel and gasoline, but quickly expanded to encompass frustration at stagnant incomes and the growing cost of living. (AP Photo/Claude Paris)
A teargas canister falls among demonstrators wearing yellow vests Saturday, Dec. 8, 2018 in Paris. Prized Paris monuments and normally bustling shopping meccas locked down Saturday and tens of thousands of police took position around France, fearing worsening violence in a new round of anti-government protests. (AP Photo/Thibault Camus)
A demonstrator wearing a yellow vest is covered in blood after getting in injured during a protest in Paris, Saturday, Dec. 8, 2018. Prized Paris monuments and normally bustling shopping meccas locked down and tens of thousands of police took position around France. Macron's government warned that Saturday's "yellow vest" protests in Paris will be hijacked by "radicalized and rebellious" crowds and become the most dangerous yet after three weeks of demonstrations.(AP Photo/Thibault Camus)
Riot police officer walk past a burning barricade Saturday, Dec. 8, 2018 in Paris. Crowds of yellow-vested protesters angry at President Emmanuel Macron and France's high taxes tried to converge on the presidential palace Saturday, some scuffling with police firing tear gas, amid exceptional security measures aimed at preventing a repeat of last week's rioting. (AP Photo/Bertrand Combaldieu)
PARIS — French riot police fired tear gas and water cannon in Paris on Saturday, trying to stop thousands of yellow-vested protesters from converging on the presidential palace to express their anger at high taxes and French President Emmanuel Macron.