There is no use in spending any time and effort in thinking why a person is the way they are, why the person is saying rude things, hwy they are behaving badly .
The focus should be on us. The focus should be on the way we respond to their behaviour, there attitude. The only thing that we have in our control is the way we perceive things and stand over ground without becoming defensive and without personalising things. Sometimes just staying calm would take away their negative power over us. Sometimes it is better to say nothing to say a lot.
*Do read the Disclaimer