Other perspectives:
Police statements are predictably found to change under a thinnest level of scrutiny.
“Justifiable” use of force varies from department to department, police force to police force, state by state. It does not mean “the only or best option available” as any less controversial action would be equally as justified. US police, in aggregate, are known to escalate situations into something more dangerous or hostile than all of the options available. Of the 17,000 distinct autonomous paramilitary forced in the US, there is no way for a citizen to know what “threat matrix” they are currently being evaluated under, and if there even is a way to no longer be perceived as a threat without being eliminated, especially when the police are already operating under bad information that you are unaware of. Finding police actions “Justified” is a term used to resonate with the preconceptions of citizens, but actually means 17,000+ different things which no citizen knows the details of, only that particular department and scarred prosecutor.
Speaking of fear: Mayors, governors, prosecutors and juries are afraid of their police, just like they were afraid of the Mafia. This is not talked about. Equally dubious “I feared for my life” situations can happen to you and your family and law enforcement can rely on people like you believing the police statement verbatim.
Police are held to a high moral standard culturally, but are not trained in a way that reflects this. In a criminal investigation due to use of force, the person under scrutiny would be convicted of their statements changed so much. Police are able to operate under an abstraction of “justified” which is available at the discretion of the their supervisor, the DA, prosecutor, or a jury under randomly generated prosecutor instructions applicable in that one specific jurisdiction that nobody was aware of before that day in a private grand jury trial, before continuing to a less private jury trial with the same issues.
FBI has analysis of police in nationalist groups. There is no way for a citizen to differentiate any officer from another.
With this in mind, there is a lot less latitude to accept the deaths as stated. Cherry picking a few of the deaths and concluding so easily that its “justified” from description alone just neglects the inefficiency of the system. There are limitations in any of our abilities to judge the outcome. There are imperfections in our system of checks and balances.
Other developed countries have many people with knives and guns and the US is a total aberration in how these situations are handled.