I watched the videos. The Police (as they are trained to do) entered the premises loudly instructing the occupants they were police with search warrants. In the first cam video I could not tell what the occupant was holding but is was obviously a weapon of some sort.
In the second cam video they actually announced before they breached and while we did not see the actual shooting we did see officers first pass by the spot where the occupant eventually ended up on the floor which indicated the occupant may have been hiding and attempted to ambush the officers.
In the last one we saw nothing of the shooting but again the officers announced before entering the premises and I did recognize the sound of a semi-auto AK being rapidly fired. The police don't carry AKs.
The first video is of a guy who gets shot and killed because they awoke him from his sleep and he came out with a golf club cause he thought there were intruders in his house.
The second video you can't tell but the video shows a para military police force busting into a non violent suspect. Part of the problem here is the police love to do their No Knock raids for no reason.
The third video is of a 2 tour marine getting shot from 71 round fired from the police.
There were NO AKS. All the gun fire you here are from ar 15 and other weapons from the
POLICE ONLY.
The reason this stuff happens is because of people like you who blindly make excuses for the police and their actions.
Hate to tell ya this but I heard AK fire mixed with the other fire at the beginning and yes I can differentiate between what the cops use and AK rounds going of. As for the no knock raids being done for no reason. The only thing i can say to that is.

They have to get a warrant first and in order to get a warrant they have to provide a judge with a compelling need for the warrant.
One other thing, all I have here is your and the OPs word, back it up with facts from official sources including background on each individual that the cops might have had, prior arrests, if any, history of psychiatric issues, if any, etc, etc, etc so I can make an informed decision. Oh and since you and the OP made the assertion the burden of proof is on you two.