The passenger tried to rob the bus driver, who was cut on the arm during the struggle, officials said.
The transit union is fighting for the worker, though he can't distinguish between stop light colors.
The cards are part of a campaign to slow trains as they enter stations, following a rash of deaths.
Leaders call for "stronger" safeguards for women after MTA worker said she was licked by her boss.
Thousands of Occupy Wall Street protesters, as well as union workers, marched on Foley Square Wednesday afternoon.
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