Excellent article.  Privilege in our society (and virtually everywhere else on the Earth) is based on wealth and income; i.e. how much money a person has or doesn't have.  Beyoncé is privileged; Oprah is privileged; an old white guy living on the streets of Vancouver is not privileged.  Most of the "unpacking your privilege" identifiers are individualistic and petty and besides who are the Arlo Kempf's to judge how a particular white person may perceive their existential state.  Everybody has insecurities; everybody can feel slights.  As an older white guy I can assure you I do not feel privileged.  Nobody is opening doors for me.  Nobody gives me a "privileged" position in a line up.  When I go into an office the young usually female, often non-white clerk does not treat me with special politeness - in fact, I "suspect" often the opposite is more correct.