The protestors fighting against President Emmanuel Macrons plans for reform were pushed back and order soon restored.
However, unrest was seen by witnesses elsewhere in the historic city throughout the evening.
Those travelling to Paris or other cities for flights could be impacted, according to national railway SNCF.
Riot police officers run onto the violet carpet of the festival to push back protesters against the pension reform in France as they try to invade the carpet of the Series Mania festival on March 21, 2023 in Lille, FranceSylvain Lefevre/Getty Images
Eurostar is reporting several trains have been cancelled and more information can be found on its website.
Rubbish has also been piling up as refuse collectors join the strikes.
Many stars such asDesperate Housewivesactress Marcia Cross were in town, as the Forum got underway.
Sylvain Lefevre/Getty Images
Meanwhile, the winner of the Co-Pro Pitching Session was unveiled.
Zhanna Ozirna and Filip Syczynski are there writers.
The winning project united the judges unanimously with the raw, emotional intensity of the storytelling.
Series Mania began on Match 17 and runs until March 24.
