Coming from Limoges, things fell apart badly mainly due to police actions :

• a group went apart tried to go and block the highway

• the police decided to tear gas everyone, including the peacedul protest with families, babies and elderly persons

• people where told by the police to stand back and to go to townhall neighborhood

• building was unprotected, though it’s usually is in case of protests

• despite a few plainclothes police officers, no action were taken when first fires started

Not to be a conspiracy theorist, but everywhere in France things were so badly handled by the gov and police that it look almost intentional.