Guys, just whip out a video camera. It works all the time specially if 'kotong para'. Ive experienced the same incident, where i was flagged down by changing to a lane, near where TE's tambay, but I didnt stop, didnt sped away just drove normally. One of them followed me to the next stop light. Whipped out my digi cam and rolled down the window. The moment he saw the camera pointed at him, bumait sya.

Bringing a camera and recording arguments in any situation is a big help. You can use the record againts them. Deters anyone being recorded to do something bad or say something wrong.