If it really was such a disenfranchisement of a protect class then it would run directly afoul of the Supreme Court's ruling in Callais, and a suit against the state would have that direct ammunition against the move.
It's not on you to organize, mobilize, etc. It's just on someone to file a lawsuit demanding an immediate injunction of what the supremes had *JUST SAID* was illegal.
You know, assuming it really was what you describe.
@renewedresistance