Republican legislatures are using the Supreme Court’s redistricting ruling as permission to rig elections The history of racism in America can be traced through Supreme Court dockets. Not just in the landmark cases through which the courts intervened to stem it — like Brown v. Board of Education , which ruled against school segregation; Loving v. Virginia , where the court overturned bans on interracial marriage; and Gomillion v. Lightfoot, which determined that districts drawn to disenfranchise Black Americans were unconstitutional — but in the instances where they got it historically, catastrophically wrong.  Last week’s decision in Louisiana v. Callais will likely go down in history as one of the court’s most regressive rulings, one that threatens to erase decades of progress made by the civil rights movement.…