In the 51 years since the U.S. Supreme Court recognized – and then reversed – federal abortion protections, advocates and opponents have fought constantly over reproductive rights.

“There is now a playbook where the authority is going to continue to be whittled away,” a state prosecutor said of new restrictions on prosecutorial discretion.

Protesters rallied outside the Supreme Court as the justices considered a strict Mississippi law that could lead to the reversal of longstanding abortion rights precedents.