And privacy only matters if you have something to hide, right?

Police work is a public matter. They have no right for privacy in the execution of their job.

But you dont have a right to everyone else's business. Police frequently deal with people in their worst, and yet some feel so entitled to seeing these situations they have nothing to do with as though it were just a drama on Netflix.

Example: https://www.portlandoregon.gov/police/news/read.cfm?id=28147...

The mother of the affected was telling people to go away, but they were so desperate to push their own agenda they ignored it. The BWC videos are on YouTube.

I agree that this is a problem, and it could be solved by a legal requirement - spreading of the material is illegal if it is done for degrading the subject of police action, and "traffickers" (i.e. "laugh of the day" video aggregators) are held liable for redistributing such content.

Do you expect the same privacy at work as you do at home?

You missed the point.

Not arguing against holding public law enformcement accountable, but in a society where everyone sues everyone at the drop of a hat it's very easy to do something reasonable in the context that nevertheless opens you up for potentially expensive legal consequences. I can understand why people get jumpy when they are being filmed, even if they aren't doing anything obviously wrong.