Several thousand people had previously rallied peacefully for two hours Tuesday around the main Paris courthouse in homage to George Floyd and to Adama Traore, a French black man who died in police custody.
Police had banned the protest because of coronavirus restrictions that forbid any gathering of more than 10 people.
As the demonstration wound down, police fired tear gas and protesters could be seen throwing projectiles. Two small fires broke out.
Tensions also erupted at a related protest Tuesday in the southern city of Marseille.
SOURCE: Associated Press