You're clearly implying this is what happened. Where did you get this? Do you have a link, report, and or independent witness statements to support this?
And since you say your a cop, and wear it on your sleeve, do you always come to conclusions prior to knowing all the facts?
You seem to think the FBI just showed up and started shooting and the man was probably in his bed sleeping. Nothing I can say will dissuade you, so I'm not going to try. I don't care what you think.