Close to 200 people rallied outside the state Capitol building Monday afternoon, calling on Gov. Nathan Deal to expand Medicaid — a key provision of the Affordable Care Act.

The NAACP and other liberal groups staged the “Moral Monday” rally, an offshoot of a movement that started in North Carolina. One of the group’s goals is to promote Medicaid expansion in Georgia.

“Make them hear you,” North Carolina NAACP President Rev. William Barber told the crowd. “Don’t make a deal with injustice. Do what is right.”

Expanding Medicaid would extend health coverage to an additional 650,000 low-income Georgians. Deal has said the state can’t afford to expand a program that’s already overtaxed and too costly. Twenty-two other states have also rejected Medicaid expansion, while half of states are moving forward.