@raphjd Hi there, in my opinion we are mixing different issues and problems.
From a European and weapon-controlled society perspective, I think US police are a little trigger-happy (hope it´s the right expression). I´ve watch too many times on news that police have shoot to death a civilian, just because the thought they might be carrying a weapon but ended being unarmed.
Here in Spain every police officer has a gun but it is extremely infrequent to hear about a police shooting anyone. In fact, they are trained not to use lethal force unless there is no option. As an example a couple weeks ago (maybe a little more) there was a case where a man had some kind of mental crisis and was in the middle of the street threatening the police with an axe and hitting their cars and approaching the officers and no one shoot him. They just circled him and hit him until they managed to take the axe away. If it was US I think police would have shot him in seconds.
On the other hand and regarding the case you are discussing about, I don´t see it as a case of racism. As far as I know they were to black girls, one was being threatened by the other and when she tried to stab her, the police avoid a crime by shooting the one with the knife. It was not a suspicion. They were witnessing the attack, the knife, the danger for other persons´ life. Could they have acted in a different way? For sure, but the image I have from police in the US (the one I get from news, movies and TV shows) is that, they don´t go easy, they don´t think twice…they just take action.
So, the way I see that there are plenty of racist police performances but this is not one of them, just another “regular” case of police behaviour.
Hope it doesn´t offend no one, just trying to share my opinion and exchange different points of view.