If we must live in a world with surveillance than the burden of surveillance must be carried by all.
My point: Shifty, illegal, underhanded things are just wrong. Do it all above board.
The protesters in this case were destroying company property on company land over a pipeline that was routed around a native American reservation.
It would be weird if the police DIDN'T warn companies/individuals about protesters planning on destroying property at other locations.
That's the police's job - to prevent crime. If the protesters were smashing cars in your neighborhood, I suspect you'd want the police to warn the residents there as well.
Do you mean officer movements in-field? That's often done by protesters (I remember seeing examples of it during both the BLM protests and the WTO protests; police movements tracked by monitoring police scanners and updated in realtime to chatrooms and Twitter).
Do you mean who they are personally? As public servants, that's generally a matter of public record.
Do you mean camera recording of specific encounters? That's become best practice.
I think what you're describing is what we do now.
"2.a The home addresses, telephone numbers, dates of birth, and photographs of active or former sworn law enforcement personnel or of active or former civilian personnel employed by a law enforcement agency, including correctional and correctional probation officers, personnel of the Department of Children and Families whose duties include the investigation of abuse, neglect, exploitation, fraud, theft, or other criminal activities, personnel of the Department of Health whose duties are to support the investigation of child abuse or neglect, and personnel of the Department of Revenue or local governments whose responsibilities include revenue collection and enforcement or child support enforcement; the names, home addresses, telephone numbers, photographs, dates of birth, and places of employment of the spouses and children of such personnel; and the names and locations of schools and day care facilities attended by the children of such personnel are exempt from s. 119.07(1) and s. 24(a), Art. I of the State Constitution."