Patinoire de garges

Legal graffiti wall in Garges-lès-Gonesse, France

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legal walls

https://www.google.com/maps/@48.9720067,2.3922793,266a,20y,41.66t/data=!3m1!1e3?hl=en-US Satellite shows a colorful wall on the back of the building.

Is this wall still safe to paint?