Demonstrators were seen marching and holding placards in the memory of Canico.
Canico, 24, was one of 14 people who fell in the river during a concert on the night of the Fete de la Musique, where the Anti-Crime Brigade known as the BAC conducted a raid. His body was found 38 days later.
His death and the subsequent finding by an internal police inquiry, which "could not establish a link between the police intervention and the disappearance of Mr Steve Maia Canico," as French PM Edouard Philippe said in July 2019, caused an outcry in France.