On April 23, the Federal Communications Commission will start to kill off net neutrality rules. That’s the day when the ongoing process to repeal the rules begins, but the White House Office of Management and Budget still has to sign off before the core net neutrality protections are reversed. The date was made public when the FCC’s order rolling back net neutrality rules entered the Federal Register Thursday morning.

And now, a new fight can begin to save the rules that prohibit internet service providers from slowing websites or charging premiums for “fast lanes” for specific services or higher-quality streaming. Back in December, the FCC voted to move forward with its plan to eliminate these net neutrality protections. But those that wanted to challenge the repeal in court had to wait for the official order to be published before they could sue to block it from taking effect. Now they can.

The order has galvanized everyone from consumer advocacy groups and attorneys to technology companies and citizen activists. A coalition of more than 20 state attorneys general, plus the consumer groups Public Knowledge, Free Press, and New America’s Open Technology Institute, among others, filed a barrage of early lawsuits in January, and started to refile these suits seeking to block the order from taking effect today.

Tech companies Mozilla and Vimeo sued the FCC Thursday for repealing net neutrality. New York Attorney General Eric Schneiderman and many other state attorneys general formally commenced their lawsuit in the afternoon.

The repeal of net neutrality is considered a major win for Republicans,…