Which only emphasizes the need for continued civil litigation:
The department lacks subpoena power in voting cases, which means it may have to look for evidence of discriminatory intent in emails that private litigants try to obtain through state freedom of information requests. If that doesn’t work out, the DOJ could try a more subtle strategy. “There's plenty of case law where the courts have found intent of racial discrimination because certain decisions aren't explainable unless you take account of race as the motivation,” Crayton said.
If you want to join this fight, donating to this group may be the best way.