Be in certain parts of America
We tend to think of this idea as applying to say, African-Americans in the south. But it can cut both ways, I can take you to a part of Seattle where a white guy in an expensive car at night is going to get pulled over for sure. A few years ago, a man was found shot in his car there, the attitutude of the police was "white guy in a BMW here at 2AM, he was looking for drugs or prostitutes or both."
He said something that sounded odd and so the interviewer asked if he was saying that "unless the officer is indicted, you don't believe there has been any justice ... even after a thorough investigation and a jury has reviewed the evidence?"
He couldn't even understand the question. He answered something else and so the interviewer asked him again, spelling it out in more detail.
The guy sounded genuinely puzzled at the notion that both justice and no-indictment could exist at the same time.
This is the part that bothers me about all this. If your going to demand "justice" that is going to mean living with what gets decided even if you don't like it. Demanding a particular outcome is not justice, its the the sort of mental process that led to lynch mobs. Unfortunately, I think some will take the protest too far, or worse, use it as an excuse to raise hell.