Even in my local community, which is likely among the 10 most progressive in the country (we're either the first or second most progressive in Chicagoland, itself one of the most reliably blue major metros in the country), support for Flock was pretty evenly divided.
I think it's good to engage this way, but I have a lot of thoughts on things to do that are more effective than giving public comment, and a caution that if you have strong opinions about ALPRs and you choose to pay attention to this issue you're going to be confronted with a lot of opinions that may surprise/discomfit you.
I strongly suspect that opposition to surveillance technology doesn't manifest along a simple progressive-conservative divide.
In my experience, a sizable chunk of people who are anti-surveilance are pretty staunchly rightwing.
This is bad news in that it means that there isn't a pre-formed anti surveillance coalition, but good news in every other way imo.
At the last public meeting that someone from our household attended, people screamed and loudly booed during people's time to address the local elected officials.
So, I'm aware that the people I live next to are tremendously rude dipshits who hold awful opinions.