There's also this interesting SFGate article, h/t PJ Evans.
"A witness said Carmignani allegedly threatened to stab and kill Doty if he didn’t leave the area, the office said. Prosecutors turned over this evidence because they considered it relevant to the circumstances involving Doty, the office said."
And my favorite detail:
"Carmignani said the individuals began shouting at him, and he deployed pepper spray but accidentally sprayed himself. Carmignani said the next thing he remembers is being assaulted."
https://www.sfgate.com/bayarea/article/da-may-drop-charges-ex-fire-commissioner-attack-17921309.php
@jcsnotes @chadloder Reverse the stations in life. If Doty approached Carmignani, holding a can of bear spray and said he was going to stab and kill him him if he didn't leave the neighborhood -- and then bear sprayed C. when all C. did was shout -- you wouldn't bat an eye if C. picked up a metal rod and hit Doty with it.
The only difference is you're sympathetic to the guy with more money.