Do not tolerate being vilified. Distance yourself from those who seek to take underhanded jabs at you while maintaining their innocence. Such behavior barks of immaturity and a complete disregard for the feelings of others.
And not everything is an argument. Sometimes it's merely a different point of view....unless you're always looking for a fight. It's not necessary to agree on every issue in order to be kind and get along....unless being "right" is your top priority.