The basics: Do not kill, do not steal, do not destroy.
This is behavior worse than that of rabid animals. It should be treated accordingly.
How would you feel if they put cameras in your home? I know it sounds absurd but in some places landlord CCTV is gaining more and more terrain.
These individuals destroying cameras, instead of using force to try and impose their will (to no avail), should support candidates that favor the policies they want.
We (supposedly) live in a society. Society is not possible if crime is tolerated.
I'd rather we just elect better city councils.