Tableview -- your mistake appears to be to have thought the system would work. Well, it did, but not in the way you expected. Perhaps next time you would be better to submit said video directly to the news editor at one of the major TV news outlets.
As for the illegality of photographing these things, I can't speak for where you are, but in the U.S., this is what typically happens:
ACLU Calls on Maryland Transit Authority to Cease Unconstitutional Harassment of Photographers | American Civil Liberties Union
Here's another interesting source. Probably others like it around.
Photography on Transit Systems
Usually, the "privacy" plea is related to the individual's "expectation of privacy" in a particular situation or environment. I doubt the driver of a public transport bus should have any expectation of privacy.