My grandfather owned a grocery store on the edge of a black neighborhood in Indianapolis in the ‘20’s and ‘30’s and never had any problems.
But then, he always carried a revolver with him. And was well-known for doing so. He usually kept it in his hand - not in a holster......
The values then were different - there were intact families, the church was at the center of social life, people had respect for others and for property values.
None of that exists today. Values would have to change in Black America for it to have the quality of life it deserves. But then black people have to decide what their attitude is to themselves and the world around them.
That is not something White America can fix for them.