Not all but most people who posted seem to think that a wave means friendship. I think that is the very reason the cop didn't wave back to the original poster.
Listen please,these people are not your friends.
i only wave to people on two wheels, military personnel, and small kids who are staring at me with those "i wanna grow up to be like him" look in their eyes
How about adults that stare at you and want to be just like you?
I'm an id ee ote apparently, what does IN MY OPINION or LAW ENFORCEMENT OFFICER mean?
Listen please,these people are not your friends.