The move will impede progress that’s been made on deterring crime, the U.S. Conference of Mayors says, calling for the grants’ reinstatement.

The U.S. Justice Department has canceled hundreds of ongoing grants that funded everything from services for mental health care for police officers to support programs for victims of crime and sexual assault,

Advocates warn the loss of federal funding will jeopardize programs that help crime survivors heal and prevent cycles of violence in California communities.