Blackwater security drive around shooting Iraqi civilians.?

There are several reported incidents where Blackwater Inc. employees have fired upon and even killed our own soldiers. Then there is the story that leaked about the true origination of the IED parts and materials that came not from Iran, but from some company called Zapata that has headquarters in the US and Israel. Of course this will not be found anywhere in the mainstream media. The two soldiers that were investigating the IED origins were found murdered with their throats slit in a dumpster. What are they trying to cover up? Of course there are many incidents when Iraqis pull up to checkpoints, are asked to leave their vehicles for inspection, get back in and then have their vehicles explode a bit further down the road. This is then reported as a "insurgent car bombing" in the mainstream media to make the public view of Iraqis yet even worse. This is how it works and who is going to stop them? No one. Sad, but a fact.