The kind of cop you are talking about is a coward. They are far less likely to harass protesters when they are open carrying.
It’s one thing for them to be afraid you might be armed, and quite another to know you are armed and surrounded by allies who are also armed.
A very american perspective, tbh. From soneone in a country where you’re not allowed to carry a gun around as a random idiot, it’s so wild to read.
Then again, I also understand that this external perspective has little meaning. You can’t magically wish the laws + all those guns away, and like in any arms race you can’t be entirely unarmed until you can enact a more permanent de-armament solution later.
It’s actually a lot less common for regular citizens to open carry in the US than some might think from US News. It’s unusual in a protest, and almost always a far right thing. It has been used effectively by the left, but not at scale in the last 50 years.
The most effective protest movements usually have two approaches going on at the same time, one that threatens violence, and one that is strictly non violent. Non violent movements tend to be ignored until negotiations with them are seen as more favorable than dealing with an armed movement.