In many cases, the decision to install Flock cameras have been made by city councils and sheriffs' offices. So it very much depends on local candidates.

On the broader topic, I'm not sure that just voting is the way that we'll get out of this mess, but I think a large part of the problem is how our focus on wider, national issues has eroded the interest in the local. So people seem to be most disenfranchised from the level of politics where they can actually have the most influence, both by voting and direct action (protests, calls, etc).

The local government officials in charge of allowing these to be installed.

It also represents an opportunity for upstarts. If you want to get into local politics, this is a single issue that will unit voters and bring them in.

We had a city councilperson elected on the sole issue of replacing the purple street lights. She won decisively and her entire campaign was literally signs everywhere promising to fix the purple streetlights. (yes, they were fixed).

We turned over seats on our city council for the first time in decades and the new, "liberal" council members voted with the rest, unanimously, to install more Flock cameras.

Your mayor and city council and maybe local judges and sheriff.

Badger your city council, work with like-minded residents in a way that can credibly threaten their re-elections, find and support privacy-conscious candidates who won't sign-onto Flock's agenda, create ads based on council meetings when councilors support surveillance in a way most voters will reject. Put their quotes on billboard with their picture, etc