Police tried to remove a banner, but failed.
PSG - Montpellier 13.03.2011.
After the fight between Boulogne and Auteuil about a year ago, PSG banned nearly all supporters from attending any PSG matches. You will noticed on photos later in this article that it's not any group banners at all when PSG play.
During the match against Montpellier away supporters took up a banner to support ultras of PSG in their fight against their club and was suppose to stay quite in 15 minutes. But police broke in and tried to remove the banner, which totally failed!
Two older articles about what happen and situation now: