Earlier quoted context omitted.
The goal here by activists isn't to directly physically disarm every camera. Like with any act of protest, it's at least as much about the optics and influence of public opinion. Visibly destroying the units is more cathartic and spreads the message of displeasure better. Ultimately what needs to change is public perception and policy.
If it's about sending a message, I think using a drone to defeat mass surveillance is quite evocative.
You want to evoke the people and not the state.