I may be reading into this, but I think the message here has something to do with the gassing of gardens and the need to knock it off before we kill more than we intend to.

Installation of ‘La marche des nains’ (the March of the Dwarfs) at the city museum in Saint-Quentin-en-Yvelines, France by artist Marc Giai-Miniet.
images from encreviolette