I have a small dog I walk daily. By-&-large people where I live just ignore each other. Also... during the winter there don't tend to be a lot of people out walking. So it's not typically a problem anyway. During the summer I wear a wide-brimmed hat with the vizor pulled down over my eyes so I avoid eye contact with people. I also typically wear sunglasses.

On the off occasion when someone does try to tag me for something, I just shake my head "no" & keep walking. (I also carry a big walking stick which could, under the right circumstances, be used as a weapon!) I suspect, over time, I've probably developed something of a reputation around the community I live in as being anti-social. To quote Popeye: "I yam what I yam & that's all what I yam..."