I have no clue as to surrendering based on race.
I got my headlights turned off
I got my twelve gauge sawed off
I'm 'bout to bust some shots off
I'm bout to dust some cops off
Those lyrics were thirty years ago. If you're raised listening to that garbage and told that it's cool do you think it might condition you to fight if you are challenged?
It's easy to find a difference if it exists, it's harder to find an explanation, it's just damned lazy to jump to a race based conclusion. It was a good study technically, but the authors did not suggest much in the way of answering why. If you are an academic you have to ask the difficult questions, or at least you used to be permitted to do so, these days you get "cancelled."