Much in the Way Dogs Mark Their Territory

From an alert reader: this photo was taken in the passage between lines 6 and 12 Metro Pasteur.

Said our correspondent:

I have no idea whether those responsible are muslims who wish to mark the territory, or non-muslims who wish to make a point about the realities in present day France.

Apparently a poster promoting an upcoming Cliff Richard concert suffered the same fate. We expect most people will find this to be less of a problem were it not for the internecine nature of the vanadism.