I guess if I wanted to get this information out, I would do the following:
Make several copies of the film in a format that can be easily shared;
E-mail or snail mail copies to specific individuals at each of the local TV stations (call ahead and find out some names to get it to the right person);
Get it ready to put up on a site like Youtube and think about labelling it appropriately so others can find it (i.e. City of Toledo [Department] Workers on 2-Hour Lunch or whatever);
THEN, e-mail or snail it to the supervisor of the department and the mayor's office. Inform them that the media already has the film. Tell them you are thinking about putting it on Youtube, too, in case the local media ignore the story. Send everything anonymously if you are worried about your safety.
Sit back and wait for results. If you don't see a media story within 2 weeks, put it on Youtube and hope that it gets more attention that way. TV stations and the papers often write about Youtube stuff especially if it's shocking and/or embarrassing.
I really hate to think there would be retaliation and "stitches" over this issue :-(