Lori Lakin Hutcherson explains white privilege through examples
Concrete, heart-wrenching examples, making it hard to pick a quote. Just read all of it.
And since many people seem to blanch at the phrase itself, it's worth highlighting this part of the conclusion:
As to you “being part of the problem,” trust me, nobody is mad at you for being white. Nobody. Just like nobody should be mad at me for being black. Or female. Or whatever.