I've seen such things on the news as well ..
And truth is .. such cop should see a lifetime sentence in jail if I had to decide.
But this is going to be a political discussion in no time if I'd tell you how I feel about that and why.. sooo just let me say but this much:
You kinda made this escalative situation yourself ('you' as a nation, not person)
IMHO it could be fixed within a decade.. it won't be though.. not for all I can see from here.
What I am reluctant to believe is, that these kind of cops are the majority..
And again (highly dramatized),
that was NOT a burning trashcan neighborhood in the middle of the night, where basically every RAT is afraid of everything that moves is pulling a gun and shooting for no reason...
(which affects everyone's -incl cops- preposition to something happening)
It was a "I just mowed my lawn this saturday" neighborhood in brightest daylight..
and worst thing anyone was afraid of there was that a pidgeon will poop on your car under that tree...
which again affects everyone's preposition.
So yeah... NO! THIS KID WAS NOT AFRAID FOR HIS LIFE!
He simply wasn't and if, he was just paranoid.
It's not cops and people for god's sake,
cops ARE PEOPLE, perfectly average humanoids.
And within every group of people above a certain size
(cops, nurses, germans, americans, african-, caucasian-, asian- decent or in short HUMANS)
there is a certain amount of 455holes, no question about that.
But assuming every individual of such group must automatically be one is a prejudice.
sure there are groups where the ratio is well above average...
and no I do not give an example

"cop" is none off such group.
One political statement and I'm done...
What you need in areas where "black kids must not trust white cops" (sad.. sad that this is even a thing!)
you need more black cops! as simple as that.
have more afro american people join in with the men in blue.
(easier said than done, I know.. but still: DO IT!)
'sid