Back in the "good old days", making the voter registration very difficult was the way to keep the wrong people (=blacks) from voting.
When you talk about the good old days I think back to the post war 1940s, 1950s...........those were the good old days. We had a country then. Things change.
As far as making it difficult to vote: Poor, uneducated and indignant people, illegal immigrants, convicted felons.......those are still the wrong people. Calling them black is a bit of a cheap trick but thats your call and your free (still) to make it.