Often, there are many solutions to a problem, with different externalities and implementation requirements. Speed limit enforcement for sure has some benefits, but also some downsides. Any absolute has edge cases that don't work, but I don't in fact think creating the large networks of people empowered to surveil citizens to enforce speed limits is the only viable means of reducing traffic deaths, a goal which is often better served by creating more viable transportation alternatives to cars. I don't think carceral approaches to problems are always wrong, but they are often an attempt to individuate a problem that's better addressed on the level of infrastructure

GP probably meant mass surveillance. I don't think anyone's arguing that a cop with a radar gun watching one piece of road is harmful. It's harmful when it scales to hundreds of data points across different areas, is automated, and has almost no oversight or accountability baked into the system.

I thought the "automated" part was a clear implication of the statement personally.