French authorities arrested over 400 people after PSG football celebrations turned violent across Paris following the team's Champions League win against Arsenal.Rioters vandalized local businesses, set vehicles on fire, and attempted to storm a police station while crowds of 20,000 gathered near major city landmarks.Interior Minister Laurent Nunez reported that seven police officers sustained injuries as security forces deployed tear gas and baton charges to regain control.The chaos occurred despite the mobilization of 8,000 officers intended to prevent a repeat of the widespread violence observed during last year's title win.