Usually I get advanced notice of stuff like this, but someone organized a public freeze under my radar today, similar to what happened at Berri-UQAM metro in February:
This supposedly happened today at Central Station.
UPDATE: Another video of the event, which also involved a freeze in the food court of Place Ville-Marie. And another one, which shows CTV's Paul Karwatsky, making it abundantly clear to everyone that this is an organized event, and another one.
UPDATE (April 15): Don't ask me why they waited more than a week, but CFCF finally has a report on the freeze from Karwatsky in his "My Generation" segment.