[mapmeld]

The Chicago example is famous, but the case earlier this year with several districts in North Carolina revolved around race and disenfranchisement (as partisan gerrymandering is common and exceedingly difficult to make unconstitutional). These were created in a partisan way, but with hopes that it would be within the law. In any case replacing North Carolina's districts algorithmically without respect to race would be illegal.

Some background https://ballotpedia.org/Majority-minority_districts