You encounter quite a lot of strange and argumentative people in your life.
Neighbours, parents of kids your kid goes to school with, classmate in college etc

since you can't always choose neighborhoods etc maybe you can become more selective. I am not sure how and why you even have to talk to these less than pleasant people let alone be upset over their actions. I never wave at neighbours when driving. There is no need to explain anything.

I think becoming more choosy who you associate with would help you to avoid these bizarre people

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