How about these steps:
1) Take a reporter from any of the media channel best if its AAJ TAK, IBN 7 etc :). Explain the situation the harassment that one can undergo while reminding them of super TRP ratings. Take him along disguising as your own distant relative. Let him cover the whole event with the best of his investigative journalism ability with the hidden cam.
2) Before going, go and inform a your local police about your visit, get it recorded either at the police station diary, visitor log book or do it by email ccing it to your local thana SHO, SP, SSP etc.
3) Take a packet of sweet (swipe your card at haldiram with the recipt proof). Pop it up decntly on your first meet with them (i know its hard on face, but you know it why we are doing it :)
4) Take a group of ladies (relatives/non relatives) and equipp them with lot of Mahila Kanoon Gyaan (would be good if one of them is from local chapter of NCW or local politacl party's woman wing). Give a piece of their own medicine to the male members of their group if they even try to man-handle any of these otherwise empowered ladies. Get the case registered against them at the first go with the media footage.
5) Take a lawyer in confidence, don't tell him about the video shoot details but do tell him about your meetings and ask him to be prepared in case of any contigency.
5) Go ahead, firm, but polite. Be flexible in the approach and listen more talk minimal and too the point.
6) Never get instigated even in the worst of the situation at least on camera :), Go shoot the film and if ready for public trial, make it public in the larger interest of the society.
Seasoned people from law fraternity, please advise on these steps, are they not good enough to expose the motives of miscreants?
Regards,
Rohit
(Disclaimer: These are purely personal thinking and purely non binding written with a view to find a solution in such situation)