Demonstrators held placards reading “police rapes” and “police kills innocents” as they rallied outside the Bobigny courthouse, north-east of the French capital, surrounded by a large contingent of riot police.
While the rally was mostly peaceful, reporters at the scene said clashes broke out after a handful of protesters hurled projectiles at police and several vehicles were set alight, including a van belonging to RTL radio station. Officers responded with tear gas.
Earlier in the day, four people were arrested in the Mediterranean port city of Marseille on the sidelines of another march against police violence, officials said. Similar protests took place in other French cities, including Toulouse and Orléans.
The unrest in Bobigny follows several nights of violence in Paris' northern outskirts, triggered by the brutal arrest last week of a black man identified only as Theo, in the nearby suburb of Aulnay-sous-Bois.
The youth worker suffered such severe injuries to his rectum during the arrest that he needed major emergency surgery and remains in hospital.
One policeman has been placed under investigation for rape, suspected of deliberately shoving a truncheon into the young man’s rectum.
Three other officers have been charged with “deliberate violence in a group”.