No these aren’t brand-new ShotSpotter gunfire detectors, as I initially thought.
They’re telemetry transceivers to give MUNI vehicles signal priority, per the Richmond District Blog:
Now here’s a shot from 2011 on Scott Street in the Western Addition – I don’t know what all this stuff is:
I don’t think any of them have anything to do with signal priority…
Caroline Chen has some more details on the shooting of Kenneth Harding on July 16th, 2011 in Bayview’s Mendel Plaza near 3rd Street.
The SFPD’s Shotspotter* map indicating the order and location of triangulated shot locations:
Click to expand
Here’s a bigger picture via Google Maps:
The distance across the street from the place where Kenneth Harding fell from the location where shots 2-8 were fired is about 55 feet.
One protest is at 5:00 PM on July 19th and the Community Meeting is at 6:00 PM on July 20th.
*A Shot Spotter sensor looks one of these things, most likely: