The banner, which featured France's richest man LVMH boss Bernard Arnault, fellow billionaires telecoms investor Patrick Drahi, luxury group Kering's founder Francois Pinault and Francoise Bettencourt, daughter of the late L'Oreal heiress Liliane Bettencourt, read: "The gang of profiteers".

Activists said in a statement the stunt was intended to protest "the shameless enrichment of billionaires during the health crisis".

Attac is calling for the introduction of taxes on the richest people and the windfall profits of multinationals.

LVMH could not be immediately reached for comment.

The Samaritaine department store reopened to the public on June 23.

(Reporting by Dominique Vidalon, Manuel Ausloos, editing by Louise Heavens)