I'm sorry, but "interpreting" someone might be going for a weapon does not justify killing someone and it's not a valid fucking excuse. Neither is him trying to escape.
The officer shouldve never been pointing his gun at him in the first place. Even then, an officer isn't justified in killing someone because they didn't follow their exact order.
People like to blame it in the victim by saying "If he didnt do this subtle little thing that could be interpreted as a possible threat, he wouldn't have gotten shot.". Yeah... Maybe, maybe not. Either way, killing isn't justified unless they are a certain threat to your life. Perceiving the possibility isn't enough.
That would be like me shooting anyone carrying a duffle bag in public and justifying it by saying I "interpreted" there might be a bomb in the bag (just like the dumbass "interpreted" there might be a weapon in the car). Would you go and say "well it's their fault, they shouldn't have been carrying a duffle bag because it could've been interpreted as a threat and they should've known that"? No, you wouldn't.