projectiles were hurled at the police. police have used the word mortars, very large fireworks, explosive devices thrown at the police. four police officers injured. that seems to have been isolated to last night. at least that s what we re seeing so far, victor. we ve also watched throughout the summer these yellow vest protests in paris and in other parts of france. are we expecting those to flare up as well this weekend? reporter: yeah, that s been the real concern of the police here, that and what are known as the black walk protesters that dress in black and a really aggressive protesters. what we ve seen from these yellow vests protesting in paris, some of the ram pages earlier this year have led to destruction of stores on the famous champs elysees, right in the heart of the tourist district there, and it s those