Why is there such an extreme resistance to filing a police report and asking the DA to press charges, or at least asking management to trespass/ban, customers who assault and batter workers?

I tried organizing something a decade ago and tried to connect with a journalist about this widespread issue of customers getting away with spitting on, slapping, punching, throwing hot coffee, and threatening to rape and kill retail workers. Nobody in the “lower class” with me wanted to organize and unite. ​ Luckily, now, I work a different type of job. Is there anyone who can carry this torch and try to connect with journalists about this? Or unite for procedures that lay out what management should do in this situation?