Margaret Wente's article is a great example of white privilege.    

When POC like Justus and Karen Walker have a certain opinion it is used as an example to represent all POC.  White privilege allows you to speak on a subject without being the sole representative for everyone with your skin tone.   When Timothy McVeigh blew up the Oklahoma Federal Building we didn't make the leap to all white people are terrorists.  Muslims don't have that privilege.

Being white is neither original nor a  sin.   White and colored are labels that came from the system of chattel slavery.  There were no 'white' people in Virginia in 1619.  That label would not exist in records for another 60 years.  It is an invention.  There is no country of Whitelandia where all white people came from.

White privilege allows you to be totally unaware of your own privilege and color.

Haggis is a stupid example.  You can get it in plenty of stores, the reason it isn't more available is many people find it unpalatable.