I understand what you are saying, and agree with you.
The problem is it appears to be a state sanctioned killing.
Four FBI Special Agents are not going to go homicidally insane at the same time.
Somebody approved of his execution somewhere.
The four agents didn't do it because they felt like it.
The slitting their throats part gives me pause because slitting somebodys throat is 9-11.
If you want to slit somebodys throat in the United States you should expect an FBI agent to blow your head off.
If you ask me.