It's still too soon to determine whether the latest BART Police shooting  was legit. There were witnesses. There's station security video. Maybe the victim really was attacking the officers with a knife and a broken bottle. Maybe he was drunk. Maybe something else was going on.
And already, the cone of silence has descended. BART public affairs says the station video won't be released. The San Francisco Police Department, which is also investigating, won't release any documents or information, the Public Affairs Office tells me.
I'm already dubious. Technically, it might be legal for a cop to shoot a man who has a knife -- but is shooting a drunk guy really necessary? How much of a threat was he, really? Were there other ways to subdue him?
The BART Board ought to be asking these questions, too -- in public. Because right now, I suspect I'm not the only one who doesn't trust anything that BART administration or the BART Police say.
This is going to be a major test of how the new BART police oversight policy works. And since Step One is rebuilding the public's trust, the typical secrecy has to end.