You may not want to be, but I'll be explicit: these arrest tactics are complete, constitutionally protected rights-violating, ********.And the family members know he was unarmed based on what?
99% of these cases where the family members are blathering on about "Oh, he was just such a gentle teddy bear and 100% disabled and totally didn't have no gun and didn't do nothing wrong" end up having the body cam released showing an apparently able-bodied young man clearly armed and threatening officers at the time he was shot. We're used to seeing that song and dance routine with inner-city BLM-type thugs, and our (at least most of us on this site, I think) normal reaction in those cases is to completely discount the family's words, and predict that the evidence will show the complete opposite. So in this case, I think I'm still going to have to wait until more evidence/details come out before I jump to believing the family's claims.
Now, that being said, I'm not going to jump straight into trying to absolve the FBI, either, as I mistakenly did on the last of these such cases. Details still seem extremely sparse. What was the arrest warrant for? What evidence did they have that he was an immediate threat? And why on earth could they find no way of picking him up other than a surprise early-morning raid?
Being as it's the FBI, I wouldn't be surprised if we never get either bodycam footage, nor more meaningful details or evidence on what actually happened. And if that turns out to be the case, I think I'll take that as basically an admission by the FBI that the family's claims are true.