You do not have the right to film the police all the time, anywhere. Only when they are in a public place, performing their duties.
This is all about the expectation of privacy. Planned Parenthood might be, to a small degree, publicly funded, but they are still a private organization. In their own offices, they have an expectation of privacy, unless they knowingly give it up> You cannot knowingly give it up if you being secretly recorded.
Some states (and, IIRC, federal law) require the consent of only one party to record. California is not one of them. Some states that require all-party consent treat it as a civil offense - you can sue someone who records you without permission. California is not one of them. Some states treat it as a misdemeanor - you can go to jail for it. California is not one of them.
California has made audio recordings, when there is a reasonable expectation of privacy, without permission from all parties, a felony. 14 people secretly recorded, 14 charges (plus on for conspiracy).
These yahoos chose California from the perception (not especially accurate) that it is the most eeeeeevillllll librul state, and thus, most likely to get them footage they could edit into something that will get them a lot of money.
They choose poorly. Now they get to pay the price.