Years ago, I went on a trip to Montreal. Friends and I were taking the subway to some kind of indoor garden... dome... thing (can't think of the proper terminology).
I remember: we stopped well outside the station, still in the tunnel basically. This lasted for a few minutes. We figured there must have been some sort of malfunction. Moments later we finally get moving again, very slowly, and there's an announcement in French that we don't understand. Once we reach the platform, there were police setting up caution tape, some onlookers, and then everybody got out of the subway cars. Everybody except us.
One gentleman, one of the last to get out, turned to us and realized we were kids / tourists who knew zero French. He said in broken English, "There is accident, we go, we go."
Confused but having pretty much pieced together something bad happened, we followed him and the crowd back up to the streets. On the way I asked an officer what happened and he explained it very clearly, albeit curtly.
Our plans had merely been inconvenienced and changed that day. And we'd been kicked off in a pretty shady side of town; within a minute we'd seen two old people fighting each other, the old man grappling with presumably his wife and the wife swinging her purse at him in slow motion, encountered two """construction workers""" who threatened us and harassed us while yelling French insults at us and following us down the sidewalk, a guy in some kind of weird military get-up with what looked like Frankenstein bolts in his shaved head mumbling "this is the weak link right here" over and over to one of my friends and staring us down, etc. But I have no doubt there were people on that platform, and the driver (conductor?) who will never forget what they saw first-hand.
In addition to the fond memories of us getting noise complaints every other night where we were staying, spilling red wine on one of the pillows and throwing it down a chute that said "incinerator," and going to a Canadiens hockey game where they have hot cheerleader babes in an otherwise empty stadium, and some other uhhh nighttime activities involving dances, I will also never forget that dark episode.