That is entirely irrelevant to the claim that half of the population of blacks between 19-35 are criminals.
A mistake all too common though. There is a statistic that half the murders are committed by blacks. That doesn’t mean half the blacks are murderers.
Perceptions are that your encounter with blacks will result in a crime against life and property.
People understandably discriminate accordingly - it doesn’t matter if it is exceedingly true or very true.
I don’t have to agree with them - I am just appreciating their position.