Provocative Tom Edsall column: “The Republicans who now control the legislatures and governorships in the Deep South are using the landmark Voting Rights Act of 1965 to create a system of political apartheid…..Have Republican legislators in the South become civil and voting rights champions? No. They are promoting the interests of African-American voters in order to enhance the ability of Republican officials whose real targets, white Democrats, are struggling to cope with the steady decline of loyal ‘Yellow Dog’ supporters.”