100% right. Just look at the way the media is reporting the police officer shooting a 16 year old black girl - failing to mention in almost all reports that she was trying to stab another girl with a fuck off great big knife in her hand, just after trying to stab another, whilst her father kicked another young girl in the head on the floor.
Then the cop shoots the girl who is half a second away from stabbing another in the throat and they all stop, dumbstruck and start screaming "she's just a kid...she came at them with a knife and that's reason to shoot her!?".
Yes it is. No chance for deescalation in that case. The video is there for everyone to see.