The majority of people held in the June immigration raids in Southern California were not criminals. Nearly half of them were Mexicans and most were men.

On the heels of major shows of force by federal immigration agents in Southern California, a judge is set to rule in a lawsuit seeking to halt immigration raids in Los Angeles.

As Judge Maame Ewusi-Mensah Frimpong’s ruling rippled across the region, the federal government requested an immediate stay, pending appeal. Here’s what you need to know.