A Gilets Jaunes protest was taken over by black-hooded demonstrators and turned violent in Brussels, forcing authorities to detain 350 people.
Yellow vest protesters took to the streets of Paris for the 27th Saturday in a row but turnout numbers are declining.
French police fired tear gas at masked demonstrators in Lyon and Nantes on Saturday as heavy rain kept the number of yellow vest demonstrators down in Paris.
France's "yellow vest" anti-government demonstrations recorded their lowest turnout yet on Saturday, days after a wider May Day rally was marked by violent clashes in Paris.
Who are the Black Blocs and what are their ties -- if any -- with the yellow vests movement? Euronews explains.
Paris' prosecutor has begun a probe after May Day protesters allegedly entered a famed Paris hospital and tried to force the door to its intensive care unit.
The violence in Paris may have grabbed the May Day headlines, but many demonstrations were going off peacefully elsewhere.
May Day protests in Paris have erupted into violence as police met demonstrators with tear gas.
French police said it had made 165 arrests by early afternoon and had conducted more than 9,000 searches.
Join us for live coverage from Paris.
Anti-government protesters hit the streets in France again on Saturday in a key test of President Emmanuel Macron's authority.
Emmanuel Macron promises €5bn in tax cuts in response to government protests. The French president also promised higher pensions for the poorest and civil service reforms. He has finally delivered his plan for appeasing the yellow vest protesters in a marathon speech lasting 2.5 hours.
Emmanuel Macron promised to give tax cuts for the middle class but said the French should also work more in first news conference on Thursday.
Unions and NGOs working for the protection of journalists warn that an increasing number of journalists are being arrested and having their work equipment confiscated during gilets jaunes protests.
Interior Minister Christophe Castaner said on Friday that "the rioters have visibly not been moved by what happened at Notre-Dame."
Macron will give a press conference from the Elysee palace on Monday night.
The protests, named after the high-visibility safety jackets worn by demonstrators, began in November to oppose fuel tax increases
Watch Monday night's full episode of Raw Politics
Police fired tear gas at "yellow vest" demonstrators on Saturday (April 6) in the western French city of Nantes in another weekend of anti-government protests.
French Prime Minister Edouard Philippe said he recognised the need to "quickly reduce taxes" in a presentation of the Great National Debate takeaways.
The protests were largely peaceful.
Travelling through France, our road trip team stopped in the town of Narbonne to talk to Yellow Vests about the motivation behind their demonstrations.
Turnout declines for 20th round of 'yellow vests' protests in France
"I'm 73, what could happen to me?" activist Genevière Legay said at a peaceful gilets jaunes march, before she was severely injured when police closed in on protesters.
Nice's public prosecutor said on Friday that an injured 'gilets jaunes' protester had "indeed been pushed by police" at last weekend's protest.
It comes after violent scenes on the landmark Parisien boulevard last Saturday that saw demonstrators torch Le Fouquet restaurant.
The decision came after violence marred last weekend's protests, reaching levels not seen since December.