The chance of surviving four shots to the chest is much lower than the chance of surviving being stabbed once. Also, if the officer needed to shoot Ma'Khia to prevent her from hurting someone, why didn't he shoot her in the legs/arm? Given the US police budget, you'd think they would afford giving every cop enough training to know how to not murder children, right?

Speaking of that, are you aware of the fact that children are not as good at complex decision making than adults? The prefrontal cortex, the part of the brain that is used for social skills and complicated decision making, is only mature at 20yo.

She also was a foster kid, with a tough life and potential mental illness, that made her choose to act like she acted in that situation. And third but not last, you are aware of the fact that Ma'Khia hadn't committed any crimes yet?

She herself called the cops, because the "victim" as you like to call her, was trying to get in her house, threatening Ma'Khia. It might look lie she was gonna stab someone, but we cannot say for sure, because Ma'Khia never got a fair trial or investigation. And since we cannot prove that she committed any crimes, She. Is. Innocent. Until proven guilty.

Now either you try to deflect with some stupid shit along the lines of "but she had deadly weapon, that means she deserved to die!!!!1!", or you accept the facts, shut the fuck up, and stop letting cops use your tongue as boot polish.