According to France 24, 26 people were injured, many of them officers, and at least 21 people were arrested, when protesters hurled projectiles at the police line. Police responded with watercannons and volleys of teargas.These videos by an Argentinian videographer living in Paris show the scenes on Boulevard Montparnasse and adjacent streets, where crowds were shrouded in tear gas amid the clashes. Credit: YouTube/Lucas Arland">