If black people make up the minority in your community and 90% of them are the ones causing the crimes then statistically speaking you're safer profiling and or avoiding all black people in that community then.
If white people made up 90% of the crimes, they would get profiled too.
There is actually a culture on avoiding black people because of all the absolute crimes they commit. When you see a black guy about to cross your path on the sidewalk, walk across the street.