I suspect it can be done to show us how bad things are over there and what the our psychologically-weaker boys might do under long term mind-fuck , war experience .
They may also be performing some predicting programming on us preparing our minds for the future criminals , highly trained , dangerous , ex soldiers who saw too much shit
Who knows ?
I totally agree with you WH that they only show on MSM what they want us to see hence there must be some twisted logic behind these "coalition soldiers killing innocent civilians " Media Events regardless of their authenticity . If even they happened for real they give them so much publicity that we must be cautious .
To summarize , the rationale could be :
1. things are so bad over there that we better keep our mentally bent boys in Afghanistan than bring them home
2. Our boys are doing hell of a job for these ungreatful locals , seeing their mates killed for a just cause and see only hostility brings them to these horrible acts
3.Lets bring our kids home and leave the job to Blackwater , emotionless pros
4. Maybe there was too much stories on dead NATO soldiers that they decided to sell "soldier killing locals" event . Americans cant be seen as victims too much
5. It is also possible that they are just helping their Afghan puppets to look tough on Americans and improve PR. Now the soldier will be sentenced to death and Karzai will be allowed to throw some shit on NATO heads . Its better to work on a fake event than a real one
hundreds of other reasons