While generally true, the radio report of the rifle being found in the trunk is not the enemedia's fault. According to this, someone reported on a police radio that they'd recovered a rifle from the trunk of his car. I haven't had time to listen to it, so I can't say one way or another.
However, the government is absolutely capable of murdering 20 kids to further its aims. Absolutely, and without a doubt. They'll even do it on live TV (Waco) and noone does a damn thing about it.
I saw with my own eyes an aerial shot of a rifle being pulled from a trunk by what appeared to be a law enforcement individual. That’s why I believed later reports that handguns alone had been used.