It's about a documentary which made some waves, accusing the involved politicians of outright lies and exaggerations as justification for military action, which in turn then lead to the things they fabricated.
It was called 'Es begann mit einer Lüge/It started with a lie'
https://programm.ard.de/?sendung=281116097670119
https://www.spiegel.de/politik/ausland/umstrittene-ard-dokum...
They were like that because of cleaning up after some skirmish. To be identified, and buried.
These pictures were used to present it like that was common. Which wasn't the case.
The military intervention created the circumstances which made that common.