Police clashed with demonstrators in Paris and Lyon Saturday, firing tear gas and water cannons as thousands turned out across France for the latest wave of protests against racism and police violence.

Officers prevented protesters trying to launch a march through the streets of the capital, at the end of a three-hour rally. They fired tear gas after some demonstrators pelted them with projectiles.

This was the latest in a series of French demonstrations following the death last month of black American George Floyd at the hands of police officers in the United States.

Demonstrators dropped to their knees and raised a fist as they turned out to march in the western city of Nantes
Demonstrators dropped to their knees and raised a fist as they turned out to march in the western city of Nantes AFP / Loic VENANCE

But the protesters were also highlighting what critics say is the problem of racism and violence in the French police.

Several thousand people congregated at the Place de la Republique in Paris, answering a call from a pressure group seeking justice in the case of Adama Traore, a young black man who died in police custody in 2016.

Traore's sister Assa Traore called on those attending the rally to "denounce the denial of justice, denounce social, racial, police violence", renewing a call for an investigation into her brother's death.

Thousands of people turned out in Paris and other cities to protest against police violence amid calls for change
Thousands of people turned out in Paris and other cities to protest against police violence amid calls for change AFP / THOMAS COEX

"The death of George Floyd -- this African-American killed on May 25 in Minneapolis by a white policeman -- is a direct echo of my brother's death. It's the same thing in France, our brothers are dying," she said.

Feelings have run high in France in the wake of the death of George Floyd in the United States
Feelings have run high in France in the wake of the death of George Floyd in the United States AFPTV / Aurore MESENGE

One demonstrator, 19-year-old Djibril Sacko expressed his frustration.

"I came to demonstrate for justice (and) we have been gassed several times then they surrounded us and things got out of hand given we couldn't leave," he said.

One demonstrator, 27-year-old student Elisa, said she did not routinely favour an "anti-cop discourse" but added it was "clear there is a problem of racism and fear of the police today".

In the southeast city of Lyon, police used water cannons and tear gas at the end of a demonstration attended by about 2,000 people.

IMAGES Police fire tear gas and block an exit path during a protest against police brutality and racism in central Paris. Organisers of the rally attempted to keep people calm and "not provoke them", even after tear gas cannisters were fired into the larg
IMAGES Police fire tear gas and block an exit path during a protest against police brutality and racism in central Paris. Organisers of the rally attempted to keep people calm and "not provoke them", even after tear gas cannisters were fired into the large crowd. AFPTV / Lise BOLLOT

In the Mediterranean city of Marseille, police said 2,200 people demonstrated. Organisers of the rally put the figure at between 4,000-5,000.

Other rallies took place in cities from Montpellier in the south to Nantes and Bordeaux in the west.

The rallies came at the end of week when France's police watchdog said it had received almost 1,500 complaints against officers last year -- half of them for alleged violence.

French President Emmanuel Macron on Thursday noted the need not to "lose the youth", as feelings run ever higher in the wake of the Floyd killing.

On Wednesday he described racism as "an illness which touches all society".

Interior Minister Christophe Castaner has promised "zero tolerance" of racism in law enforcement, saying it is clear some officers "have failed in their Republican duty".

He cited several instances of racist and discriminatory remarks that have recently come to light.

Amnesty International meanwhile appealed for "a systemic reform of police practices" in France. "The seriousness of the situation requires a global response from the authorities," the group said in a statement.

Government spokesman Sibeth Ndiaye suggested in an interview with Saturday's Le Monde that there should be "constructive debate" regarding race, with efforts redoubled against racial discriminations".

Frederic Lagache of the police union Alliance said he hoped Macron would receive a delegation, as many officers felt their "honour had been injured" over the widespread criticism of the force.