Also, IIRC, Cheryl Greene did not come from Highland Park, she lived about 25 miles south.
Fact of the matter is that ethnic groups tend to follow other ethnic groups.
Italians edged out Irish, who had edged out Germans and Poles, and so it goes. Cambodians and Vietnamese have edged out "others" to form their own communities in the same period as this article discusses,
Diference is that it is easier to get shot if you get crosswise in the Latino (sic) vs Black interface.
As Thomas Sowell had pointed it, back in the nineteenth century, Poles edged out blacks in Detroit.