Union workers, I tell ya...
Seriously though, that is pretty messed up. Maybe they see scary crime all the time working in the subway, so are just trained to push the call button and not get involved? Especially since people are likely armed with guns/knives/whatever that are committing the crimes. It's *sort of* understandable why they might not rush to her aid considering the weapons. But still... I can't imagine in the case of the ticket clerk, just sitting there, hearing it happening, and not doing anything other than pushing the "police" call button. Yikes.