"Street Artist Etienne Lavie Hijacks Billboards in Paris Replacing Ads with Classic Artworks"

[what4]

I have mixed feelings about this, mainly because a similar justification is used by those who deface walls with scribbles or political protest and call it graffiti art.

This is France, where the rules may be different, but somebody paid good money for those billboards, and what one person can claim the right to use them free -- even for an art project?

Grump.