One must wonder of the mantality, nad the frustration that exists in the people who say these things. If you think about it none of these people know you or me. Would they if they did know you still treat you this way? Once upon a time in my past confrontational life I used to ride up to these people and say,"You want to say that again this time out of your car?" They would shut up. I do not advocate this behavior but it worked for me at that time. This is not something I do now. Anyway I feel that an intellectual conversation with those individuals is out so what do you do? Pete brought up a good point show them your rights! Even if they may not understand it do it anyway.