All these interventions look like they are in fairly sizeable 4 way intersections. It obviously isn't possible to replace all of them, but I think that it would make sense to lay streets out with roundabouts and avoiding 4 way junctions as the UK and various EU countries do, at least for new developments.

You can't do doughnuts in narrower streets without intersections.

I also think that many of these people are basically broadcasting their identity online whilst committing various reckless driving crimes. You don't necessarily need to show up and intervene at all of them in real time, but if the recent riots across the pond have shown anything, it's that it's fairly easy for the police to knock on your door in the morning and arrest you for misbehaviour the night before.