Several passengers, in different cars, made complaints about harassment from each other, which no-one else had seen. One was Black, one Italian, and one Russian. Of course as long as they were riding in different cars now, it didn't much matter. The Black guy got off the (southbound) train in San Carlos, and as he headed down the ramp, our conductor noticed, from the departing train, the Russian following after at a brisk pace--even though he'd had a ticket good for the whole trip down to San Jose.
I suggested that the only logical conclusion was that the Russian Mafia was making a hit.
Our conductor had reached the same conclusion himself, and called over the ticket inspector to prove that someone agreed.
Well, if we're not going to get WiFi on the train, we're going to have to make up our own entertainment!