I have...er..."witnessed" several individuals being thrown off the train. Among the reasons: refusal to heed an "all aboard" because they wanted to finish their cigarette (on a Surfliner, so they weren't permanently stuck), refusing to present a ticket to the conductor (because said conductor had refused to play baggage porter for the passengers half-dozen oversized/overweight bags), foul and abusive language toward both crew and other passengers, and most recently, the threat to "infect" everyone - which relate's to Lucifer's post, since said passenger claimed to be HIV positive (but just to address that, HIV does NOT equate with crazy).It happens all the time, and from what I've seen, 99.9% of the time the removals are absolutely justified.