You have an inflated idea of the risks that police have. Very few police officers die in any given year. Certainly fewer per capita than firemen, or crab fishers.
Second, their desire does not give them unlimited rights to violate the rights. They are limited by law and by reasonableness.
Third a hand filled with a camera can not simultaneously operate a firearm. The camera is a reduced threat of violence, not an increased hazard.
The camera is a risk if you are a bad cop intent on violating people’s rights. The cops kind of self select for attention on that, as we have seen.
I’m well aware that being a cop, in North America, isn’t the most dangerous occupation in the world. I’m a store clerk and more of me die yearly than they. However, neither is firefighting, but you wouldn’t suggest they they forego certain equipment because their actual danger has been mitigated by having the proper equipment and training, would you? Cops deal with us in ways that help protect us and them. I guess the few numbers that do die each year, probably reflects successful training and technique.
Yes they are limited and should be, but if you give the cops cause, they can and do arrest you.
How long would it take to drop a camera and pull out a gun, 2 seconds? And you expect the cops to be able to react with no concern with the camera and, on a dime, be able to stop her if she had pulled out a gun?