“At a certain point, it is just actually opening up opportunities for harm as opposed to supplementing the public safety mission of law enforcement,” EFF’s Beryl Lipton told San Francisco's KQED News of retaining data from automated license plate readers.
https://www.kqed.org/news/12005347/the-east-bay-has-hundreds-of-new-surveillance-cameras-and-more-are-on-the-way