This is by UK artist Darren Cullen, aka SpellingMistakesCostLives. He also runs the Museum of Neoliberalism in the UK and has done a bunch of anti war/army/MIC pieces. All in all a decent dude.
I actually wouldn't mind some biodegradable landmines that were only dangerous for 5-10 years or something. Imagine if we had those in WW2 Europe or Vietnam, those places would be much safer now if we did.