The Supreme Court is right now hearing arguments that sections of the Voting Rights Act signed by Lyndon Johnson are no longer applicable because the South has changed and no longer exhibits racial or discriminatory elements. This case was raised by a local government entity in Alabama.
A quick look around uncovers attempts at voter suppression and denial of unencumbered voting rights in several southern (and northern) states that are as recent as the last election. Follow this up with the news out of Mississippi; the exact circumstances is not verifiable but that allows you to form your own opinion. Here is the report from Slate: